Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cb37357d988b07…

MALICIOUS

PDF

313.8 KB Created: 2022-03-13 18:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: cb46a4b4e5b874231da8534fa469b454 SHA-1: 745a3edfda129b01273b34a46ba4a41f43eb28f0 SHA-256: c0cb37357d988b0786c74b9e5c1f6aa20092fcb7ec673b55b1ad81fff36485cd
182 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6972

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://colod.co.za/XSRYdR1H?utm_term=quotation+template+online PDF link annotation
    • https://agregadoschucuri.sinecsas.com/ckfinder/userfiles/files/fubunoxo.pdfIn PDF document text
    • http://gardens-spa.com/user_pict/file/7187442183.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/54189271084.pdfIn PDF document text
    • http://www.perlodrink.com/documents/tumus.pdfIn PDF document text
    • http://candientushinko.com/images/file/kawas.pdfIn PDF document text
    • http://studiotecnicostradi.eu/userfiles/files/bovagilubujurisogafix.pdfIn PDF document text
    • http://thietbianninh188.com/uploads/files/35595440709.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16213d05af1639---nibikifigu.pdfIn PDF document text
    • https://www.pianoeg.de/admin/ckeditor/kcfinder/upload/files/lojutivudafufatus.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16203041bb554c---81830206543.pdfIn PDF document text
    • http://nrtz.fundacja-spektra.pl/upload/files/jamimipatunapu.pdfIn PDF document text
    • http://eblast.stationhub.com/Upload/file/6223305080.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/5246488389.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/jazawere.pdfIn PDF document text
    • http://nexxstep.nl/userfiles/file/86347488044.pdfIn PDF document text
    • http://alptw.com/images/files/43098969080.pdfIn PDF document text
    • https://otterdisplay.com/userfiles/file/19392527531.pdfIn PDF document text
    • https://www.danielbarboza.com.br/v2/meuAdmin/inclusos/plugins/ckeditor/plugins/kcfinder/upload/files/55365052167.pdfIn PDF document text
    • http://gurolmumcu.com/userfiles/file/vafukiraxiwaxubev.pdfIn PDF document text
    • https://sarenpinler.com/calisma2/files/uploads/wobimosakab.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2022-2-2/20220202081403713153.pdfIn PDF document text
    • https://chentimeboutique.com/uploads/files/202202240626277786.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/sebexebatewaler.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622c7aa706dae---85371389716.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/powunudaguvadonoz.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/falenuvobopojufolivo.pdfIn PDF document text
    • http://iharoskezmuvesek.hu/ckeditor/kcfinder/upload/files/71805770203.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/fukugefawufefewofi.pdfIn PDF document text
    • https://medgal.pl/admin/ckfinder/userfiles/files/19388743171.pdfIn PDF document text
    • http://snc.easy-event.net/img/uploads/files/22337538507.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/gixagifaxazuvopuwavutip.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 extracted file (font_00_sfnt_off000476c9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000476c9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000476c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x476C9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00048de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48DE4 19304 bytes
SHA-256: c132dbeeca16eb695a34a649eb8ada239171b58923bc1cddadaf2511c69e6304
font_02_sfnt_off0004c091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C091 10304 bytes
SHA-256: 32711a0c017b94460dc2a746fce4ae1608de66657ca3d6ece35629cbfeba1549