Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b2bebdd981cf2a…

MALICIOUS

PDF

39.1 KB Created: 2021-10-04 14:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 05a5c33f7c96dbadc66f283a9a82f130 SHA-1: 5de0b844e30faee3048b89046f88d9307119b95c SHA-256: 97b2bebdd981cf2aa05e36ae405cf904d515d351ffaacd8d5ca0be0d36724cbe
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The document's structure, being image-heavy with minimal text and a click-outward action, further supports its use as a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8588

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 39 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://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161503cbaed2fd---16303463330.pdf In PDF document text
    • https://brakos.it/file/18352645294.pdfIn PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/rerajebedad.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/4696387d2e0df26ef0ca95d9ebd83a72/70268096075.pdfIn PDF document text
    • http://thietkevang.com/upload/files/tevez.pdfIn PDF document text
    • https://showdetango.com/bafa/userfiles/file/namimuputokazipesexupa.pdfIn PDF document text
    • http://pretaporter-pegah.com/userfiles/file/7933785468.pdfIn PDF document text
    • http://keletunderground.hu/images/uploaded_pics/file/23794137352.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/b267f7a73ebe5e0396c547e1e133ea1c/dumutidunovisepisonemawaf.pdfIn PDF document text
    • http://elitaliaweb.it/upload/file/nusakamur.pdfIn PDF document text
    • http://ithalattagarantibelgesi.com/resimlerfiles/12285663024.pdfIn PDF document text
    • http://educasters.co/ckfinder/userfiles/files/40899772176.pdfIn PDF document text
    • http://businessvaluationapp.com/fck_files/file/powomudenepuliwes.pdfIn PDF document text
    • https://jamisonfurnace.ca/userfiles/files/lilujomepaso.pdfIn PDF document text
    • http://makesomenoise.hu/upload/file/morudinesasu.pdfIn PDF document text
    • http://slipa.site/0429/upload/files/68003936In PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=nt+scan+ultrasoundPDF link annotation

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