Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d732728dd8e4c6…

MALICIOUS

PDF

14.7 KB Created: 2019-11-08 00:55:57 +00:00 Authoring application: mPDF 5.7 First seen: 2020-12-28
MD5: e4e2219df2f9ce8438c8fdaa978d64de SHA-1: 3db9b52445a428a631867acbb68c71a5a482a71b SHA-256: a7d732728dd8e4c6165d85605367bd63c1da4cbde65e2588c38ba1e77611b24f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be directing users to external sites, likely for SEO spam or to host further malicious content. No scripts were extracted, and the document body was unreadable.

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/2737737730739733/Daughter-of-Joy-Brides-of-Culdee-Creek-1-by-Kathleen-Morgan.pdf In PDF document text
    • http://cefasfese.4pu.com/3737734735730732/Daughter-of-Joy-Brides-of-Culdee-Creek-1-by-Kathleen-Morgan.pdfIn PDF document text
    • http://cefasfese.4pu.com/3732735737735738/Louisiana-Brides-by-Kathleen-Y-39-Barbo.pdfIn PDF document text
    • http://cefasfese.4pu.com/7737739736732730/A-Certain-Magic-by-Kathleen-Morgan.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734736730736731/The-Mail-Order-Brides-of-Boot-Creek-Anthology-by-Carr-White.pdfIn PDF document text
    • http://cefasfese.4pu.com/3737731732734736/An-Unbroken-Heart-Amish-of-Birch-Creek-2-by-Kathleen-Fuller.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733733736739732/An-Unbroken-Heart-Amish-of-Birch-Creek-2-by-Kathleen-Fuller.pdfIn PDF document text
    • http://cefasfese.4pu.com/1735737734733734/A-Reluctant-Bride-Amish-of-Birch-Creek-1-by-Kathleen-Fuller.pdfIn PDF document text
    • http://cefasfese.4pu.com/4737736737736739/More-Than-a-Touch-Snowberry-Creek-2-by-Alexis-Morgan.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730737733731736733/Strands-of-Gold-by-Kathleen-Morgan.pdfIn PDF document text
    • http://cefasfese.4pu.com/1732738732730/Demon-Prince-by-Kathleen-Morgan.pdfIn PDF document text
    • http://cefasfese.4pu.com/4734734739/Issued-to-the-Bride-One-Navy-SEAL-Brides-of-Chance-Creek-1-by-Cora-Seton.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734736730738736/Spoiled-Evelyn-The-Mail-Order-Brides-of-Boot-Creek-4-by-Carr-White.pdfIn PDF document text
    • http://cefasfese.4pu.com/6738734739734731/Issued-to-the-Bride-One-Marine-Brides-of-Chance-Creek-Book-4-by-Cora-Seton.pdfIn PDF document text
    • http://cefasfese.4pu.com/4735731730735737/Christmas-in-Mustang-Creek-The-Brides-of-Bliss-County-4-by-Linda-Lael-Miller.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734736730738731/Shameful-Celia-The-Mail-Order-Brides-of-Boot-Creek-3-by-Carr-White.pdfIn PDF document text
    • http://cefasfese.4pu.com/8739734731731730/Shane-s-Bride-Mail-Order-Brides-of-Texas-3-by-Kathleen-Ball.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733735730737732/A-Fire-Within-These-Highland-Hills-3-by-Kathleen-Morgan.pdfIn PDF document text
    • http://cefasfese.4pu.com/3736737733735/The-Heretic-s-Daughter-by-Kathleen-Kent.pdfIn PDF document text
    • http://cefasfese.4pu.com/4735731732735734/The-Heretic-s-Daughter-by-Kathleen-Kent.pdfIn PDF document text

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