Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d37ec4b62bdee0…

MALICIOUS

PDF

55.4 KB Created: 2021-06-20 15:12:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80420b3b1a66a984700c998f9705686f SHA-1: dfaef5f4deab62e5888b67c65cc0e8961f49d4ca SHA-256: a7d37ec4b62bdee0f0775585a0a022ce01f1597af290998332405f74ecda49b7
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an image-only design with a clickable action, typical of a screenshot used to obscure a malicious link. The document embeds numerous URLs, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6395

Heuristics 6

  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 55 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://smidgel.ru/uplcv?utm_term=quicksand+and+passing
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/4b8f5c1efa20a4359223474eca95fd70/bakatodugodolijomonofet.pdf
    • http://poiskvod.ru/images/file/tufamavugafimoxinifeb.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a4eda4e29---numekaxarugesop.pdf
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/06ncqn84eut6tjqsoevge4en72/3213458484.pdf
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/d1c691e72a013c034a943b43be3feb2d/99408205099.pdf
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/0158dd4c3db29cfc9b2e9f87004a24d6/besexidotasudazekofutoki.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/33972b4c0a2ecae298f649fb130f2280/sevababibirelutirarubopiz.pdf
    • https://mytopics.it/uploads/file/69652327880.pdf
    • http://nanumed.ro/uploads/files/garumedijajofaxinikewi.pdf
    • http://somersetcountybar.org/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sanabetoxi.pdf
    • http://cdseoulps.com/uploadfile/fckeditor/file/debobademonifedoro.pdf
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070348d5703b---faxunilapasa.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608d039a7b913---51196777416.pdf
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/1timnnu2hdij4a50iq6dubjui1/povis.pdf

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