Malicious PDF — malware analysis report

Static analysis result for SHA-256 191f36bf838f5157…

MALICIOUS

PDF

595.5 KB Created: 2022-02-04 17:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: c60d1ea2552d8ff50339e51a388b4423 SHA-1: 9d6bb02cb0076e529da8de7e7f65a1d000af80a6 SHA-256: 191f36bf838f515750fc59958ad24a80747acb4c78ebdbd0f7b234b287e4a5af
152 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2550

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://tevav.co.za/XSRYdR1H?utm_term=25th+anniversary+party+invitations+template PDF link annotation
    • http://lovelyspa.net/ckfinder/userfiles/files/woxovilevufalobegame.pdfIn PDF document text
    • http://chengzechem.com/upload/files/88911093452.pdfIn PDF document text
    • http://mrs724.ir/basefile/drtiketcom/files/penetose.pdfIn PDF document text
    • https://btegypt.com/file/bosujoduxifujujutofibol.pdfIn PDF document text
    • http://stavclearing.ru/upload/files/58283405232.pdfIn PDF document text
    • https://www.miroku-mfg.co.jp/system/js/kcfinder/upload/files/78324590289.pdfIn PDF document text
    • http://www.rua.edu.kh/ad_library/tinymce/kcfinder/upload/files/milajebevifefux.pdfIn PDF document text
    • http://www.singchai.co.th/ckfinder/userfiles/files/pefepazudosavol.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/161dfb1d1e3320---15424358525.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16179f6eb3153f---bizazivamesesotoleg.pdfIn PDF document text
    • http://raegcafe.com/uploads/files/wamimusosisaboz.pdfIn PDF document text
    • http://bunny888.com/ckfinder/userfiles/files/nubugirimaju.pdfIn PDF document text
    • http://helenhotel.vn/upload/files/napotuwimotidedemuzudezot.pdfIn PDF document text
    • https://5points.com.ng/5points-admin/kcfinder/upload/files/xagexusilimogomomumenixox.pdfIn PDF document text
    • http://cfboxrx.com/js/kcfinder/upload/files/sanezizagabovopiwovagudaf.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/89495167044.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160f4bc96095ad---kurokilotenewowufomovogel.pdfIn PDF document text
    • http://tygodnikzuzlowy.pl/ckfinder/userfiles/files/sivagirerawosijumeviza.pdfIn PDF document text
    • http://forensique.biz/app/webroot/kcfinder/upload/files/bagatobofi.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/todegurugiweranosatetolum.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/61158944527.pdfIn PDF document text
    • http://cesnek-vysocina.cz/UserFiles/File/nugexozabona.pdfIn PDF document text
    • https://sibconsulting.com/contents/files/94244491346.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/wutinafepileb.pdfIn PDF document text
    • https://olympicaccessoriesbd.com/assets/ckeditor/kcfinder/upload/files/kuxavi.pdfIn PDF document text
    • https://poloszita.hu/admin/kcfinder/upload/files/gobusegosuwoduvukol.pdfIn PDF document text
    • http://starlightskiothon.ca/clients/4/44/44db284a3a4a6a3f34f8f2fa71918f98/File/76491150534.pdfIn PDF document text
    • http://partnercable.hu/files/xawuporukovu.pdfIn PDF document text
    • http://dogable.de/userfiles/file/2617684915.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/23951304573.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/viniwugokefudagutunemi.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612819ced0d4f---92121067075.pdfIn PDF document text
    • http://hflbdq.com/uploads/file/030609224188.pdfIn PDF document text
    • https://pmcp-avac.com/files/upload-ckfinder/files/64903189104.pdfIn PDF document text
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/51822107650.pdfIn PDF document text
    • http://tythb.cn/uploadfile/files/45623003952.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/54ba0ab27e1bd42d8a42ecbae41caacd/68350574263.pdfIn PDF document text
    • http://cpghollywood.com/userfiles/files/tuxumukuvirefilude.pdfIn PDF document text
    • http://insightonafrica.in/userfiles/file/7410635494.pdfIn PDF document text
    • http://zeroseistudio.eu/userfiles/files/wiwidilaxizu.pdfIn PDF document text
    • 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
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008b749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B749 20100 bytes
SHA-256: cf1289d5383755019595dc34d8f45d015e9656751e8e75857eba9d7c49dcb3ce
font_01_sfnt_off0008ea8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA8E 20672 bytes
SHA-256: 3ee515f22923dd171076f6de320fe1ec7cc5c6ae8c636a06c7d323509cd6ce2b
font_02_sfnt_off00090d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D68 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_03_sfnt_off00092494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92494 10856 bytes
SHA-256: ab19c4ca7cab5d263a7a5193a79432bb7f4247c0ede86e91e7140e5047add18b