Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e806d386af8ceae…

MALICIOUS

PDF

53.9 KB Created: 2021-09-06 11:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 97de8a9e25fdc9c6ec4f65ad5cd3e84a SHA-1: 63dd0265f20b020e9059359dcd210d6a108c9402 SHA-256: 8e806d386af8ceae495e3d76439065264ced8773705580cfbd5345d1081688c7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many of which point to compromised WordPress sites, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier further support its malicious nature. The document body is heavily obfuscated and appears to be junk data, offering no direct insight into the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5656

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca12c21945---98787109102.pdf In PDF document text
    • https://gencerenerji.com/resimler/files/84453943904.pdfIn PDF document text
    • https://profm.hu/files/file/worilofij.pdfIn PDF document text
    • https://ringid.vn/ckfinder/userfiles/files/jenuguso.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/qu01l8ov5f6bndikor8erp86t5/80198073336.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/18a821a74d77e04166e7c4994a0d2398/32076006530.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/51220941267.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/60c3408320c3b9b77e62ab06295ff24d/sirularexali.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/d220f8d8f2277aa4e5abebb24e1c465c/bopokesekamemazolejek.pdfIn PDF document text
    • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fatetumutasadovavuvasoto.pdfIn PDF document text
    • http://www.northern-japan.com/image/upload/File/24380859810.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/2d1f654c9f64f7067d3773f87edf3b12/85667526595.pdfIn PDF document text
    • https://marbellamohali.com/wp-content/plugins/super-forms/uploads/php/files/83aebfbd8af0a745c156f557c36b60c9/kewigatosamor.pdfIn PDF document text
    • https://barcelonacentromedico.es/files/galeria/files/ruduvotobawolavagi.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a73ee809cc---luvovipirotozesixasoboxag.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2d8a704c6b---34734056269.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/24732696678.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a4754e0ca---lezobaregadun.pdfIn PDF document text
    • http://predit.ru/admin/ckfinder/userfiles/files/81203525230.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e6561a1d6---55683645691.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/261038274469.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/b945ceed1345413b86930fe31c4b5d90/mesenarodijekazafoku.pdfIn PDF document text
    • http://hoangnamjsc.com/upload/files/zilezetilawav.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/11cc1ac5eaa4a29cce2dd6410344c3dc/sefaduxalosuxufi.pdfIn PDF document text
    • http://babamoleskine.com/files/file/rijodejipuk.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/wigixuvovozemawalubo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=wuloo+wireless+intercom+doorbell+manualPDF link annotation

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