Malicious PDF — malware analysis report

Static analysis result for SHA-256 af25e1431b59e44e…

MALICIOUS

PDF

32.3 KB Created: 2020-10-04 11:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4448c9fc02b0cffe5f37368461561738 SHA-1: 5237213ff191d5aa65c38c7ca4be6b50438577da SHA-256: af25e1431b59e44ee2158b9fab04c03a8054517c4af968a2fdfe36cdbe5d8564
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?keyword=ch%25C5%2582opi+tom+1+opracowanie+pdf In PDF document text
    • http://xamewima.fellowshipforest.org/uploads/1/3/0/7/130739024/zirigozusopig_nebovigur_letuxe_vefuwetari.pdfIn PDF document text
    • http://mogawefe.virtualclassroomconnect.org/uploads/1/3/2/8/132815014/dipuxufata.pdfIn PDF document text
    • http://files.alexjtunney.com/uploads/1/3/1/3/131381036/68bfa8cee.pdfIn PDF document text
    • http://wipajemu.splashsteamboat.com/uploads/1/3/1/4/131455069/ddcd3e1c.pdfIn PDF document text
    • http://files.sarahbanning.com/uploads/1/3/0/7/130775950/xufejedewubo-tiruvexoraru-zetiv-bijamunif.pdfIn PDF document text
    • http://pijofage.exquisitetouchdesigns.com/uploads/1/3/0/9/130969723/7692074.pdfIn PDF document text
    • http://gobopero.awakeningearthangels.com/uploads/1/3/1/1/131164250/12e5c95d4868e3.pdfIn PDF document text
    • http://fudomud.lyonsvolunteers.org/uploads/1/3/1/3/131383609/fumejuxutege-wuxujasiwexu-xafavurod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4967/5671/files/3733435366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6599/4147/files/39931094621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0309/1876/files/spain_map_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7885/3284/files/harry_potter_auror_uniform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3695/9139/files/50462029168.pdfIn PDF document text

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