Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae0df48359ba5ad…

MALICIOUS

PDF

90.6 KB Created: 2021-08-01 22:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c7aa310b5fbdf1193d02f7a925d7d269 SHA-1: ec262460c02581d2f24a3c7c8034680f2bcb59e6 SHA-256: 0ae0df48359ba5adb3cbcc035764cb3e1153a0c906f5cc038eff4dafb17909fc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Several heuristics point to the PDF being a link farm, directing users to compromised WordPress uploads and disposable hosting sites. The embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5994

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://queure.ru/uplcv?utm_term=cml+lenders+handbook+part+2+the+mortgage+works PDF link annotation
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d8bac1bf2---virigilivezafogaz.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/xarerunedi.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/kd4n2lln4ee2657ssfjl98n1r2/24025127717.pdfIn PDF document text
    • http://mamolenasnc.it/userfiles/files/8882817217.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/rapofoxifitevemakepitun.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/d9403e1684027c87dc587bb43e271380/15957987760.pdfIn PDF document text
    • http://suncreekpuppies.com/clients/8/88/88daaab1104cc9784d9cd8b59d189b35/File/bobizawumapovemote.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/9432853669.pdfIn PDF document text

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