Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbf8fb40ca8b251…

MALICIOUS

PDF

67.6 KB Created: 2020-12-24 20:18:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 47f5a59f5a45c523008fdd380af3f2ed SHA-1: 9e838963c298bac0ae66617b9940cc8dc8a1b3af SHA-256: 0cbf8fb40ca8b25184b107968944190b063ab59a8b312160461578b45602e675
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to external sites, with several heuristics flagging it as a malicious redirector and link farm. The ClamAV detection and ML classifier further support its malicious nature. The primary attack pattern involves luring users to potentially malicious external content via these links, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9275

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/aws?utm_term=drywall+sheets+for+sale+near+me In PDF document text
    • https://cdn.sqhk.co/xibumediw/RS8oaIK/45605340785.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/5876586.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/gjgfAii/nanegadizuson.pdfIn PDF document text
    • https://pegebitejujag.weebly.com/uploads/1/3/4/4/134445458/xemonojejadaju.pdfIn PDF document text
    • https://cdn.sqhk.co/fojoravuvu/Mhhhvco/dino_theme_park_craft_ride_dinosaur_rollercoaster_tycoon.pdfIn PDF document text
    • https://cdn.sqhk.co/bepasasa/shdgi43/sejoranotozakom.pdfIn PDF document text
    • https://cdn.sqhk.co/ludibipimilu/Djgjzn0/61041952245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a8b349-7f7f-49b7-b85b-5a1f4426dbec/rowaxelixekinuzuxizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c682626d-ffab-4e92-ac77-d8e8fb4cfa46/another_word_for_however.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86bac73c-d25a-47e8-af6b-f1a55437892d/watch_forrest_gump_online_free_123mo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d09ec81-266d-4ebe-a62d-e0682b68a88e/78518891316.pdfIn PDF document text

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