Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea05dbec63eab4ef…

MALICIOUS

PDF

15.0 KB Created: 2019-05-02 05:22:21 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-13
MD5: cd16a9a9696d9e422d0dbb3a031f8392 SHA-1: 7f7267a6846a91f6e845b0d7ad864c467ecf5a78 SHA-256: ea05dbec63eab4eff10095a625bc4478665c6204e581958f6aff332077509a1a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a large number of embedded external links, indicative of a link farm or SEO manipulation tactic. While the URLs themselves are marked as benign, the sheer volume and structure suggest a malicious intent to distribute or redirect users. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of specific user-facing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

Heuristics 2

  • 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 http://cefasfese.4pu.com/3739732733738/Fox-by-Margaret-Wild.pdf In PDF document text
    • http://cefasfese.4pu.com/4737738731732732/Old-Pig-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/7735730737736/Chatterbox-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/5730732738734738/Thank-You-Santa-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/7734739735736/Puffling-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/2732734735735737/Toby-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/1738735732730739/Let-The-Celebrations-Begin-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/7735730739733/The-Midnight-Gang-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/7734730732736/Ruby-Roars-by-Margaret-Wild.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730739731735730736/Henry-s-Wild-Morning-by-Margaret-Greaves.pdfIn PDF document text
    • http://cefasfese.4pu.com/9739735732736737/Science-Fiction-Westerns-The-Adventures-of-Brisco-County-Jr-the-Wild-Wild-West-Jonah-Hex-Weird-West-Wild-West-C-O-W--Boys-of-Moo-Mesa-by-Source-Wikipedia.pdfIn PDF document text
    • http://cefasfese.4pu.com/9735737738738734/Erotica-Women-s-Writing-from-Sappho-to-Margaret-Atwood-by-Margaret-Reynolds.pdfIn PDF document text
    • http://cefasfese.4pu.com/8733737732731732/Wild-Bill-Hickok-Legend-of-the-American-Wild-West-by-Larissa-Phillips.pdfIn PDF document text
    • http://cefasfese.4pu.com/8733737732730738/Heroes-of-the-Wild-West-Wild-Bill-Hickok-by-Tania-Rice.pdfIn PDF document text
    • http://cefasfese.4pu.com/3735730738733734/Wild-Land-Wild-Love-Australian-Trilogy-2-by-Connie-Mason.pdfIn PDF document text
    • http://cefasfese.4pu.com/1736733739/Dark-Wild-Night-Wild-Seasons-3-by-Christina-Lauren.pdfIn PDF document text
    • http://cefasfese.4pu.com/2738738738735730/Wild-Abandon-The-Wild-Series-6-by-Cassie-Edwards.pdfIn PDF document text
    • http://cefasfese.4pu.com/4739734736732731/Wild-Thoughts-from-Wild-Places-by-David-Quammen.pdfIn PDF document text
    • http://cefasfese.4pu.com/2730735734733738/Wild-Desire-The-Wild-Series-5-by-Cassie-Edwards.pdfIn PDF document text
    • http://cefasfese.4pu.com/2738738736739736/Wild-Splendor-The-Wild-Series-4-by-Cassie-Edwards.pdfIn PDF document text

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