Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15e2dd881f899eb…

MALICIOUS

PDF

62.3 KB Created: 2021-08-03 10:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7ef5e8f1536986d8569cdfdaccfb7e35 SHA-1: f33d3e7c993d0d64912f051219fd3c512322b474 SHA-256: d15e2dd881f899eb5eaf00776282b517c6d66dd05e3bb4bd434889f982ab7520
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress installations and disposable hosting domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9280

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bud-drog.pl/userfiles/file/xedeg.pdf In PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/onrbmana3aagpjaun5lc7ur3v5/sezifurebojawezokazimexe.pdfIn PDF document text
    • http://soul-program.com/clients/e/e8/e84723a0d254fbc5507aaa4bd1967541/File/gofalijelajax.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/56082519186.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/77968282783.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160731583bcec3---zadujip.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee23f9b8429---49825324526.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/3637785e9877018d95754a384abc3bdc/pinefagetusupuvam.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/38167892782.pdfIn PDF document text
    • http://www.anapharmata.hu/ckfinder/core/connector/php/files/98235976902.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/h94fr8a8gbfu5s7stlhjv1oor3/xejixuje.pdfIn PDF document text
    • https://cupanghitam.com/contents//files/lefibowitaleju.pdfIn PDF document text
    • http://sun-apartments.pl/data/pages/83893873707.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/pkkr1tqdcglc7u5i3el1sskmb7/39695226159.pdfIn PDF document text
    • https://jagamimpi.org/contents//files/41852010403.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=what+is+the+meaning+of+np+completePDF link annotation

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