Malicious PDF — malware analysis report

Static analysis result for SHA-256 65314b3bdbd676f8…

MALICIOUS

PDF

12.9 KB Created: 2019-05-01 18:51:50 +01:00 Authoring application: mPDF 5.7
MD5: 58951c9430a5bab4f91569e3db8cf5d5 SHA-1: 1fe1694fd87f3fda3832d6dadb491a74c09a7133 SHA-256: 65314b3bdbd676f863db2b53121915daedf9c3bfeb54db3ed99d71b2d7515f57
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 pointing to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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://xiixmcuin.linkpc.net/4202204205/Honor-The-Breaking-Point-1-by-Jay-Crownover.pdf
    • http://xiixmcuin.linkpc.net/9201201203200206/The-Point---Unb-ndige-Begierde-Welcome-Point-3-by-Jay-Crownover.pdf
    • http://xiixmcuin.linkpc.net/9205205204202209/The-Point---Entfesselte-Sehnsucht-Welcome-Point-1-by-Jay-Crownover.pdf
    • http://xiixmcuin.linkpc.net/1205200201/Better-When-He-s-Brave-Welcome-to-the-Point-3-by-Jay-Crownover.pdf
    • http://xiixmcuin.linkpc.net/2208201/Better-When-He-s-Bold-Welcome-to-the-Point-2-by-Jay-Crownover.pdf
    • http://xiixmcuin.linkpc.net/4208200207209208/Breaking-Point-Turning-Point-2-by-N-R-Walker.pdf
    • http://xiixmcuin.linkpc.net/4205204208207209/Breaking-Point-Turning-Point-2-by-N-R-Walker.pdf
    • http://xiixmcuin.linkpc.net/4200202201206200/Breaking-Point-by-S-L-Armstrong.pdf
    • http://xiixmcuin.linkpc.net/3209205208208205/Breaking-Point-by-Alex-Flinn.pdf
    • http://xiixmcuin.linkpc.net/4207201207202204/Breaking-Up-Point-by-Brian-McNamara.pdf
    • http://xiixmcuin.linkpc.net/1208208201201200/The-Breaking-Point-by-Karen-Ball.pdf
    • http://xiixmcuin.linkpc.net/2207203204200209/The-Breaking-Point-by-Catrina-Wolfe.pdf
    • http://xiixmcuin.linkpc.net/4208208206203205/Breaking-Point-by-Frank-Smith.pdf
    • http://xiixmcuin.linkpc.net/2204209208203202/Breaking-Point-by-Alex-Flinn.pdf
    • http://xiixmcuin.linkpc.net/2206203206207203/Breaking-Point-by-Roxanne-M-Dawson.pdf
    • http://xiixmcuin.linkpc.net/8205207208208205/Breaking-Point-Chapter-2-by-Rabi-Motoya.pdf
    • http://xiixmcuin.linkpc.net/8205207208208207/Breaking-Point-Chapter-6-by-Rabi-Motoya.pdf
    • http://xiixmcuin.linkpc.net/8205207208209200/Breaking-Point-Chapter-1-by-Rabi-Motoya.pdf
    • http://xiixmcuin.linkpc.net/8205207208209201/Breaking-Point-Chapter-5-by-Rabi-Motoya.pdf
    • http://xiixmcuin.linkpc.net/9209203207200205/Birthmarked-For-Glory-and-Honor-Breaking-The-Curse-of-Ichabod-by-Kelly-McCann.pdf

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