Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca070d18e54447f…

MALICIOUS

PDF

48.6 KB Created: 2021-05-03 13:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ff83e44d563bfdebd9d2111f78ad0cc SHA-1: d6be036d38456b8d1e7b85cc956bec193ce70a71 SHA-256: 3ca070d18e54447fdd99573fa19f34fa834ea400c38acc2c37a4600d5b3edaa2
174 Risk Score

Malware Insights

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

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The link directs to a PDF hosted on a compromised WordPress site, a common tactic for distributing malicious content or conducting phishing attacks. The ClamAV detection and ML classifier further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8164

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 48 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://voyagerf.ru/wp-content/plugins/super-forms/uploads/php/files/0bf8d79ca018d821115cdb5198cf6a81/nixaza.pdf
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d64a756901---64798172990.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1606c938e3c962---lizajifejomojabodafoled.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160805430c682e---mujuxikujometol.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/ta829ckmlunmomjg9etg8h3bo3/vofoxofapolosusumuginoxop.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086788c138d7---riparidegozav.pdf
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/2da010c7b1dd0ba5664337853132338c/kenidosofimuvafibujaja.pdf
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608740ca3f859---kowotolipun.pdf
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/adf0feeb8fde7f3230698c4e3cfa7657/87919948015.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/2f7db2ebabd7719a96f073f8834c9be1/gufalin.pdf
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/05ab7030fdfd7a9bb6a680f6bfe0d6ec/rofivizili.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607199cc9a5b0---27004466392.pdf
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608e17fd23f02---paresomimabufodezobo.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/ec7b3b5e094df441e6b78d1f83c90244/logawenofofiwekadajud.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=funny+chutkule++punjabi

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