Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1e055beb757695…

MALICIOUS

PDF

24.1 KB Created: 2020-11-08 02:34:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8633a2d70f8ef4500d22a443921f1c3a SHA-1: 8af7bb8ef26926c8ff53560772ec7e5184b82c2e SHA-256: ad1e055beb757695864032ae3b1e95bb2b8703aab90da0126c75675c0bed331a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier also flagged this PDF as malicious. The document body appears to be corrupted or obfuscated, but the presence of multiple links suggests an attempt to direct users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • 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://gettraff.ru/aws?keyword=ugadi+date+in+2020+in+usa
    • https://cdn-cms.f-static.net/uploads/4386822/normal_5f93a904dfa2d.pdf
    • https://nigiseza.weebly.com/uploads/1/3/4/4/134462574/1fe184751488e0.pdf
    • https://pitejuxupukure.weebly.com/uploads/1/3/4/5/134500798/sedavoxujaz_giwopebetur_vatubekemub.pdf
    • https://zilununuta.weebly.com/uploads/1/3/4/4/134490292/b507278e.pdf
    • https://cdn-cms.f-static.net/uploads/4421056/normal_5f99e2613b243.pdf
    • https://uploads.strikinglycdn.com/files/7f3466e7-21bf-4e14-bde8-48a19b8b27dd/la_letra_e_para_colorear.pdf
    • https://uploads.strikinglycdn.com/files/0c2c5d52-0745-4c95-812a-3b957c7cbce4/86215691398.pdf
    • https://uploads.strikinglycdn.com/files/e4178968-7f49-43cb-81aa-51bb1c954844/80705473648.pdf
    • https://uploads.strikinglycdn.com/files/9f2f863f-43a0-423d-8434-945ed6469a26/falice_navi_da_in_english.pdf
    • https://uploads.strikinglycdn.com/files/08d4a324-d1e0-4d2a-a823-297e814b3e61/gexasesoxipex.pdf
    • https://uploads.strikinglycdn.com/files/75d10fb0-4931-4c09-86f3-071695b65bdb/ken_tech_radio_clock_manual.pdf
    • https://uploads.strikinglycdn.com/files/2122ec1e-c436-44f1-9a80-112c70227637/utility_maximizing_bundle.pdf
    • https://uploads.strikinglycdn.com/files/f5a7389f-21ad-4b8a-81ba-021ae430e298/.pdf

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