Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d42f0041d40628…

MALICIOUS

PDF

64.0 KB Created: 2021-07-21 14:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7ecac9f0122da317789a28267854449f SHA-1: 7fb1dd0ab4d4fe49f889ad755c7cc4e5ddf69dfc SHA-256: 01d42f0041d4062837325a3022af77b74c6a6dd59ae99b38af97afc36b37ae67
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis revealed it functions as a link farm, directing users to multiple compromised WordPress upload directories and disposable hosting sites. The presence of embedded URLs and the nature of the heuristics strongly suggest an intent to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4241

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 https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079e083c0314---29095295424.pdf In PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/8e8502701e3d4722a1dd277a4356362b/joxefinulugixi.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/74529383189.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/pp0g1ftolbbnou7vh59qi5jbob/nimewiroka.pdfIn PDF document text
    • http://zpb-maciejewski.pl/upload/fck/file/86442764887.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/7d60fbeed173259e63cf891ef9bca2b8/xinebepipovixareginix.pdfIn PDF document text
    • https://vayamcs.com/content_files/files/fimobuwavazugemofenuk.pdfIn PDF document text
    • https://machinex-machines.com/UserFiles/File/fubupasi.pdfIn PDF document text
    • http://kalikraft.com/images/file/sonosinowegonam.pdfIn PDF document text
    • http://dongzzang.com/userfiles/file///11781700987.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/nujasuxasot.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/7pik582fraiaan2o4gqcodvrvh/mimatunarijox.pdfIn PDF document text
    • http://clasesholandes.com/userfiles/file/biwefafadoxejugujejuxir.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/56e4db5a7ad56921167bdfeb60d6047d/nalibodunezafanu.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/8556661993.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/ba42292882b6d5d59de09b4866d6727c/rowigomexupam.pdfIn PDF document text
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/58c90663f8e48572e72875314d108415/3144097750.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/82221041834.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608930983a8ad---lazav.pdfIn PDF document text
    • http://tanasiri.com/piceditor/file/13621194239.pdfIn PDF document text
    • http://innotack.com/userfiles/files/megukegadimepedaxotipiwir.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c9904765bf1---46810711555.pdfIn PDF document text
    • https://panificioilcavaliere.it/userfiles/files/69254728945.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160aa99e682948---jimiko.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/nupujesakamab.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/31928707743.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=unruly+hair+syndromePDF link annotation

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