Malicious PDF — malware analysis report

Static analysis result for SHA-256 e398cd9c1b8c2a28…

MALICIOUS

PDF

19.3 KB Created: 2020-02-15 03:24:18 +00:00 Authoring application: mPDF 5.7
MD5: 1bd36bb622195f3f8b5fa39295a24a35 SHA-1: 8aa7add12c9669f9d9c6111e59434e62cd94b6b3 SHA-256: e398cd9c1b8c2a28c64efd21017fbc15b607045c925be44a304cf245963fd941
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted from this sample, and the document body was unreadable, but the heuristic findings and the sheer volume of linked external PDFs suggest a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://lwoscmobook.myhome.cx/552405246524552475242/First-Apple-by-Ching-Yeung-Russell.pdf
    • http://lwoscmobook.myhome.cx/352475244524852495246/Thanking-the-Moon-Celebrating-the-Mid-Autumn-Moon-Festival-by-Grace-Lin.pdf
    • http://lwoscmobook.myhome.cx/852405242524952435245/Lin-Yi-s-Lantern-A-Moon-Festival-Tale-by-Brenda-Williams.pdf
    • http://lwoscmobook.myhome.cx/552405241524252415245/The-Festival-of-the-Moon-Girls-Wearing-Black-2-by-Spencer-Baum.pdf
    • http://lwoscmobook.myhome.cx/852405242524952435249/The-Festival-of-Trial-and-Ember-Faerie-Festival-1-by-Logan-Miehl.pdf
    • http://lwoscmobook.myhome.cx/752475246524852415241/Tao-Te-Ching-The-Science-of-Life-Secrets-of-the-Tao-Te-Ching-Book-1-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/752435241524852405243/I-Ching-The-Book-of-Changes-and-the-Unchanging-Truth-by-Hua-Ching-Ni.pdf
    • http://lwoscmobook.myhome.cx/852455247524952405243/A-Mouthful-of-the-San-Gennaro-Festival-The-Official-Cookbook-of-the-San-Gennaro-Festival-by-Amy-Krakow.pdf
    • http://lwoscmobook.myhome.cx/4524652455241/Black-Moon-Zodiac-3-by-Romina-Russell.pdf
    • http://lwoscmobook.myhome.cx/552485245524252495249/Rock-Independant-Liste-de-Projets-Enregistres-Par-Steve-Albini-Emo-Liste-de-Labels-Independants-Pitchfork-Media-Primavera-Sound-Festival-Label-Independant-Anti-Folk-Lo-Fi-1991-The-Year-Punk-Broke-Festival-Soy-Auletta-by-Livres-Groupe.pdf
    • http://lwoscmobook.myhome.cx/852455244524652445249/Subgame-Consistent-Economic-Optimization-An-Advanced-Cooperative-Dynamic-Game-Analysis-by-David-W-K-Yeung.pdf
    • http://lwoscmobook.myhome.cx/352405244524952475247/Finish-Strong-The-Dan-Russell-Story-by-Dan-Russell.pdf
    • http://lwoscmobook.myhome.cx/152485245524752415245/The-Festival-by-H-P-Lovecraft.pdf
    • http://lwoscmobook.myhome.cx/952445247524052495245/Tao-Te-Ching-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/852465247524552445240/Tao-Te-Ching-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/352425244524552495243/Tao-Te-Ching-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/852415245524752435248/Tao-Te-Ching-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/952455240524152415249/Tao-Te-Ching-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/852455242524552445246/Tao-Te-Ching-The-Way-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/952465244524552405244/Tao-Te-Ching-by-Lao-Tzu.pdf
    • http://lwoscmobook.myhome.cx/552485245524252495249/Rock-Independant-Liste-de-Projets-Enregistres

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