Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f036c5604690ba7…

MALICIOUS

PDF

42.1 KB Created: 2020-12-02 08:07:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f89117eaf930e51b9bd89a22e66439 SHA-1: 9fc7e73a0c2ea3c8901bfd4fe684d493247265be SHA-256: 6f036c5604690ba7a2d9bf37bc93e7fd86e178bdd6ad4b5fac41ab14b09ff882
232 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is identified as a phishing lure due to its small size and image-only content, typical of a screenshot designed to hide a clickable action. It contains multiple links, including one to known malicious redirector infrastructure at 'ggtraff.ru'. The presence of a link farm suggests an attempt to distribute further malicious content or SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6341

Heuristics 5

  • 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.
  • 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 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://ggtraff.ru/aws?utm_term=android+mvvm+github
    • https://cdn-cms.f-static.net/uploads/4392867/normal_5f92282a83c95.pdf
    • https://cdn-cms.f-static.net/uploads/4467564/normal_5fad57ccb9709.pdf
    • https://wilalunawotepa.weebly.com/uploads/1/3/4/6/134608105/7810414.pdf
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f8b3d21286fc.pdf
    • https://juwujumatel.weebly.com/uploads/1/3/4/0/134042908/b9596d.pdf
    • https://cdn-cms.f-static.net/uploads/4495269/normal_5fbd551811dd6.pdf
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f92ac2d27380.pdf
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5f9e592a36b4e.pdf
    • https://s3.amazonaws.com/nolarifaforuxop/nasuzefojeso.pdf
    • https://static1.squarespace.com/static/5fc0f1725bcb0228a282b335/t/5fc5022f2dd96f59188b241f/1606746674593/futomem.pdf
    • https://static1.squarespace.com/static/5fc15943ea4a794d56482977/t/5fc29352cb3e0f5771a3d84a/1606587224744/environmental_science_chapter_3_review_answers.pdf

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