Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b37dc8fdb41bca5…

MALICIOUS

PDF

13.9 KB Created: 2019-04-29 22:45:02 +01:00 Authoring application: mPDF 5.7
MD5: be28ce0d59861e5b5946a3c2eb0d8fab SHA-1: b2cef5fb0934dd9c479f6e4dad8aeeeabc6c2a71 SHA-256: 2b37dc8fdb41bca5a5dfc6d31145ce5edc663b99b2901cbd05daadb03980cccf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified as a PDF_SEO_LINK_FARM. While the document body is heavily corrupted, the presence of numerous links suggests a malicious intent, possibly for SEO manipulation or to distribute further malware. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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://loaminoo.linkpc.net/1091096090090097097/Adventures-of-Thor-Thor-goes-Scuba-Diving-by-Nancy-L-Bailey.pdf
    • http://loaminoo.linkpc.net/1092090094099091/Amulet-of-Aesterus-Necrosanguin-1-by-Cameron-Wayne-Smith.pdf
    • http://loaminoo.linkpc.net/3096095098097092/Thor-Ramsey-s-Total-Money-Meltdown-A-Proven-Plan-for-Financial-Disaster-by-Thor-Ramsey.pdf
    • http://loaminoo.linkpc.net/1091096090090096096/The-Mighty-Thor-Volume-5-The-Death-of-the-Mighty-Thor-by-Jason-Aaron.pdf
    • http://loaminoo.linkpc.net/2099096099098095/John-Wayne-My-Father-by-Aissa-Wayne.pdf
    • http://loaminoo.linkpc.net/7099099095097091/Wayne-Shelton---Volume-5---The-Vengeance-Wayne-Shelton-by-Cailleteau.pdf
    • http://loaminoo.linkpc.net/9098099098093/Randy-Wayne-White-s-Ultimate-Tarpon-Book-The-Birth-of-Big-Game-Fishing-by-Randy-Wayne-White.pdf
    • http://loaminoo.linkpc.net/1091096090090096098/Essential-Thor-Vol-1-by-Stan-Lee.pdf
    • http://loaminoo.linkpc.net/1091096090090097096/The-Art-of-Thor-by-Matthew-K-Manning.pdf
    • http://loaminoo.linkpc.net/1091096090090091092/Thor-by-Elizabeth-Rudnick.pdf
    • http://loaminoo.linkpc.net/2099099096098/Black-List-by-Brad-Thor.pdf
    • http://loaminoo.linkpc.net/4094093097096097/Thor-Omnibus-by-J-Michael-Straczynski.pdf
    • http://loaminoo.linkpc.net/9097092095091098/Thor-1966-1996-456-by-Tom-DeFalco.pdf
    • http://loaminoo.linkpc.net/1090098097094091/Justice-Undone-by-Thor-Vilhj-lmsson.pdf
    • http://loaminoo.linkpc.net/1091091094094092092/Thor-1966-1996-453-by-Tom-DeFalco.pdf
    • http://loaminoo.linkpc.net/1091096090090090094/The-Unworthy-Thor-by-Jason-Aaron.pdf
    • http://loaminoo.linkpc.net/1091096090090096097/Thor-MAX-Vikings-by-Garth-Ennis.pdf
    • http://loaminoo.linkpc.net/1091096090090097090/The-Mighty-Thor-by-Billy-Wrecks.pdf
    • http://loaminoo.linkpc.net/1090096092095091099/Thor-1966-1996-454-by-Tom-DeFalco.pdf
    • http://loaminoo.linkpc.net/8095090095094/Kon-Tiki-Across-the-Pacific-by-Raft-by-Thor-Heyerdahl.pdf

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