Malicious PDF — malware analysis report

Static analysis result for SHA-256 9975cc7b822e948b…

MALICIOUS

PDF

20.8 KB Created: 2020-03-16 04:50:48 +00:00 Authoring application: mPDF 5.7
MD5: 01926afd0bab7897acdb0b61d71f41b3 SHA-1: 51e918e089c516ed884a1acfb193dd7a5dd7f27c SHA-256: 9975cc7b822e948b388c55d362b5c7edcaa062b4fc0360618f95c00b4d84650e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDFs hosted on the domain eascasas.myhome.cx. This is indicative of a link farm, often used for SEO poisoning or to distribute malicious payloads. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the immediate user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://eascasas.myhome.cx/8aa3aa7aa3aa6aa7/Single-Variable-Calculus-by-William-L-Briggs.pdf
    • http://eascasas.myhome.cx/3aa7aa9aa4aa4aa4/Men-s-Guide-to-Being-a-Single-Parent-Different-Animal-Than-Women-Single-Parents-by-Henry-Lee-Thomas.pdf
    • http://eascasas.myhome.cx/1aa6aa2aa3aa7aa4/Why-Am-I-Still-Single-A-Tough-Love-Guide-for-Single-Women-by-Shay-Stone.pdf
    • http://eascasas.myhome.cx/1aa6aa5aa4aa4aa2/Single-Handed-Single-Girls-1-by-Veronica-Blade.pdf
    • http://eascasas.myhome.cx/1aa6aa5aa4aa2aa7/Single-Minded-Single-Girls-3-by-Veronica-Blade.pdf
    • http://eascasas.myhome.cx/4aa4aa3aa1aa6aa5/Single-Volume-2-Single-2-by-Lyra-Parish.pdf
    • http://eascasas.myhome.cx/5aa6aa8aa6aa1aa8/The-Single-Proverbs-31-Woman-Series-A-Guide-to-Waiting-for-the-Single-Proverbs-31-Man-by-Alice-Giraud.pdf
    • http://eascasas.myhome.cx/5aa6aa8aa5aa4aa7/The-Single-Proverbs-31-Woman-A-Guide-to-Being-Beautiful-Inside-amp-Out-The-Single-Proverbs-31-Woman-Series-by-Alice-Giraud.pdf
    • http://eascasas.myhome.cx/1aa0aa9aa2aa3aa8aa3/Agatha-Christie-Crime-Collection-Evil-Under-The-Sun-Death-Comes-As-The-End-The-Sittaford-Mystery-by-Agatha-Christie.pdf
    • http://eascasas.myhome.cx/7aa7aa1aa1aa2aa7/The-Mysterious-Affair-at-Styles-by-Agatha-Christie-classics-by-Agatha-Christie.pdf
    • http://eascasas.myhome.cx/8aa0aa6aa7aa9aa0/Agatha-Christie---The-Mysterious-Affair-at-Styles-quot-If-You-Place-Your-Head-in-a-Lion-s-Mouth-Then-You-Cannot-Complain-One-Day-If-He-Happens-to-Bite-It-Off-quot-by-Agatha-Christie.pdf
    • http://eascasas.myhome.cx/5aa6aa4aa1aa0aa1/Murder-in-Emerald-Hills-A-Rachel-Christie-Mystery-2-Rachel-Christie-Mystery-Series-by-Sabena-Stone.pdf
    • http://eascasas.myhome.cx/9aa5aa4aa0aa4aa1/William-Gilbert-Galileo-Galilei-William-Harvey-Great-Books-of-the-Western-World-28-by-William-Gilbert.pdf
    • http://eascasas.myhome.cx/3aa3aa0aa2aa9aa4/How-to-be-Single-by-Liz-Tuccillo.pdf
    • http://eascasas.myhome.cx/1aa9aa7aa7aa8aa0/Almost-Single-by-Advaita-Kala.pdf
    • http://eascasas.myhome.cx/7aa6aa1aa1aa7aa7/Single-by-John-le-Carr-.pdf
    • http://eascasas.myhome.cx/4aa5aa3aa4aa5aa7/Even-God-is-Single-by-Karen-Salmansohn.pdf
    • http://eascasas.myhome.cx/1aa4aa0aa6aa1aa6/Single-in-Suburbia-by-Wendy-Wax.pdf
    • http://eascasas.myhome.cx/1aa8aa5aa6aa2aa2/A-Single-Man-by-Christopher-Isherwood.pdf
    • http://eascasas.myhome.cx/9aa2aa0aa2aa4/A-Single-Stone-by-Meg-McKinlay.pdf
    • http://eascasas.myhome.cx/5aa6aa8aa6aa1aa8/The-Single-Prover

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