Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8700bf29e6c3a2…

MALICIOUS

PDF

49.3 KB Created: 2020-12-21 17:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1c42c3725ad6ad613b5e91c4a34f9d61 SHA-1: 344c77e0d031af3a3f3ab617b58c485eb340f708 SHA-256: 4c8700bf29e6c3a2ee7c8c2a99f408590be71bf248f8f340411dffb00584890b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which are to obscure domains, suggesting a link farm or SEO spamming operation. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7192

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
  • 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.
  • 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://trafficel.ru/strik?utm_term=mens+hairstyles+for+thin+hair+in+front PDF link annotation
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/nedokawimowuxuwupox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fffef97-6e10-4856-a204-560b1512e016/kirifovegaxajiwater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62ced6a3-7db2-48ba-903f-c99df336d8f4/barney_oh_brother_shes_my_sister_korean.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79b14a4492a057e2477e3/t/5fd666c0491a58544a11df8f/1607886529578/augmented_reality_android_sample_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a48a7f1-814a-4bc1-a575-f8a1a43f9e26/38009858069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fefddc2d-c32c-4819-ac5b-3c7ab758d1c0/46163379413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6b3b29-a853-47fd-b61d-ad6dc2eb0ecc/download_whatsapp_apk_for_windows_7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66076b8467722f1f92596/t/5fcddcd6eb18547f4ba6350b/1607326935068/hand_draw_3d_pose_tool_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afa5f004-09a4-4487-9bb0-39fc7b9a126e/1928063206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd4140c-d70c-4d88-add3-876340aa8e84/zambales_philippines_hotels.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63076051-9497-4c75-b028-d72485172ac3/dedimunezusururabadoxizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/441752c8-4e99-49cc-8862-ad4bbb7a1667/murano_glass_clowns_value_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55d3ea4b-b5c3-48bc-9cc1-b233358077a8/47446698167.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d9218e72e5fdbce0b39/1606372755760/pathfinder_detect_evil_and_good.pdfIn PDF document text

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