Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f37c66bc6c21167…

MALICIOUS

PDF

322.3 KB Created: 2022-03-02 07:08:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: ff4db4c543e99583d90c511e6c6de3cb SHA-1: 50873cd0fb85c2890d63828296261b5a5e319970 SHA-256: 5f37c66bc6c21167c7d8311cfe06545e3e0427e70d3e6cba428b9edb91b3e68d
161 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4992

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/162186da4579f7---rekubu.pdf In PDF document text
    • http://sdhmladavozice.cz/userfiles/file/sumejipuxudawobabaxopat.pdfIn PDF document text
    • http://zssulejovice.cz/kcfinder/upload/files/tojukasuxepanopok.pdfIn PDF document text
    • http://maciel.renalic.com/integracion2/site/userfiles/file/22393814370.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/43495100061.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/303fd625e810527ef8275cfb94796bb7/jikoxamenaropuxemuwusaku.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/9e92632089e03bc60e0ca8e545af6095/87325963901.pdfIn PDF document text
    • http://qdy.sdsgs.com/userfiles/file/boxemopevozepufivemofoj.pdfIn PDF document text
    • https://thegmsbihta.in/userfiles/file/karejegixafosebubabavot.pdfIn PDF document text
    • https://mashtalkandil.com/userfiles/file/44695211916.pdfIn PDF document text
    • https://sharenkon.com/files/vujetikalor.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620b1f9071d6a---24194360279.pdfIn PDF document text
    • https://funbugs.ie/files/file/fokawe.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/59023586973.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2022-2-12/20220212151732850075.pdfIn PDF document text
    • https://www.ventisilva.com.br/ckfinder/userfiles/files/53608896475.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/48747237868.pdfIn PDF document text
    • http://pinboulevard.com/file_space/files/mutijiwafuza.pdfIn PDF document text
    • https://www.pkkmaluku.org/berkas/plugin/ckeditor/kcfinder/upload/files/40565549112.pdfIn PDF document text
    • http://ranczowdolinie.com/files/fenujovilojamawirobar.pdfIn PDF document text
    • https://slavicchurchmississauga.com/fck_upload/file/60211895040.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/162163b9dd0eda---wizadamususemafub.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/41352765528.pdfIn PDF document text
    • http://ijfbn.com/editor_up/1978228884.pdfIn PDF document text
    • https://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/34737781126.pdfIn PDF document text
    • https://luquluqu.org/public/assets/js/kcfinder/upload/files/25447275080.pdfIn PDF document text
    • https://xn--interpeas-r6a.es/upload/files/40159161874.pdfIn PDF document text
    • http://retailpark.bg/uploads/wysiwyg/files/fixukexadukapenorikoriru.pdfIn PDF document text
    • https://fcefrance.com/kcfinder/upload/files/57945416743.pdfIn PDF document text
    • http://sarinyaequipment.com/userfiles/file/79988857416.pdfIn PDF document text
    • https://www.globalportsholding.co.uk/ckeditor/kcfinder/upload/files/vozib.pdfIn PDF document text
    • https://kaptenhoki.com/contents/files/sipoxajuperofidibugi.pdfIn PDF document text
    • https://atlaskvartir.ua/data/uploads/files/59633114465.pdfIn PDF document text
    • http://egimmo.ch/kcfinder/upload/files/16273043047.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16201442016489---nudowiwubibagubukibefopid.pdfIn PDF document text
    • https://lecachet.fr/docs/files/mutetup.pdfIn PDF document text
    • https://www.propertymegamart.in/admin/ckeditor/kcfinder/upload/files/puwexagufufitofe.pdfIn PDF document text
    • http://amcdach.ox.pl/userfiles/file/14272580014.pdfIn PDF document text
    • http://simonova-zahrada.cz/ckeditor/kcfinder/upload/files/wetazukedekovizekonapep.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe0f6037e2b---58933421512.pdfIn PDF document text
    • https://aldwalia.com/userfiles/files/dosifu.pdfIn PDF document text
    • http://www.omniasubventio.sk/admin/ckeditor/kcfinder/upload/files/diwanepaxuseworikew.pdfIn PDF document text
    • http://liveranigioielli.it/userfiles/files/19768604484.pdfIn PDF document text
    • https://szerokiewody.pl/files/files/10459322995.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=guess+the+tamil+song+emoji+answersPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    +3 more URL(s)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004865d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4865D 17260 bytes
SHA-256: da4cce18c744a21d7344dc2cf8aca65dc516370b292ef069d659170a302cd159
font_01_sfnt_off0004b29a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B29A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004c9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C9B4 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_03_sfnt_off0004dfb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DFB9 10912 bytes
SHA-256: 2edf763d455f466c6bebe021ed74fcd513f9d394820f25de4417ee2d1e48d288