Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9f9ec1c3986089…

MALICIOUS

PDF

10.8 KB Created: 2020-08-20 00:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6509113d7536f3f1c8f388993de9376a SHA-1: dd112a37b905ea6d7c7d6b5dbb953fd5874fa66e SHA-256: 5f9f9ec1c3986089234633eeda4414847373a4e1de52c522fa2b1a2a638dae15
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious due to its structure, which uses an image lure to hide a clickable link. This link redirects to a known malicious infrastructure at 'https://ttraff.ru/pify?keyword=understanding+the+stock+market+for+beginners+pdf'. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and the target URL, suggesting a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 3

  • 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.
  • 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 10 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://ttraff.ru/pify?keyword=understanding+the+stock+market+for+beginners+pdf In PDF document text
    • http://jatizu.josefjakobs.com/uploads/1/3/2/7/132740978/xukuvobirizoj_supitojepubu_nuliwozin_bisegodezevosiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/gaxamuzomoruvovoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22893269325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5361/2199/files/37446633709.pdfIn PDF document text

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