Malicious PDF — malware analysis report

Static analysis result for SHA-256 e449c45bc7736190…

MALICIOUS

PDF

16.3 KB Created: 2019-04-30 04:06:09 +01:00 Authoring application: mPDF 5.7
MD5: ddfc010895fb6ce7c5e5b8af5959582f SHA-1: c68112fcea6f12ee5042e80f7a10f53916bfd43a SHA-256: e449c45bc773619044c06e7dc5bd7edab31b0484f15115d3a16db2d6fd0edaaa
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, identified as a PDF SEO link farm, pointing to various book titles hosted on loaminoo.linkpc.net. While the individual links are currently classified as benign, the sheer volume and nature of the embedded links suggest a malicious intent, possibly for SEO abuse or to distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/1097094094094094/Her-Summer-with-the-Marine-The-Donovan-Brothers-1-by-Susan-Meier.pdf
    • http://loaminoo.linkpc.net/4095091094098091/Head-Over-Heels-for-the-Boss-The-Donovan-Brothers-3-by-Susan-Meier.pdf
    • http://loaminoo.linkpc.net/4098090097093092/The-Twelve-Dates-of-Christmas-by-Susan-Meier.pdf
    • http://loaminoo.linkpc.net/4097099094093099/The-Billionaire-s-Baby-SOS-The-Larkville-Legacy-8-by-Susan-Meier.pdf
    • http://loaminoo.linkpc.net/3096095094092097/Falling-for-the-Marine-McCade-Brothers-2-by-Samanthe-Beck.pdf
    • http://loaminoo.linkpc.net/6098094098090098/Cocky-Marine-Cocker-Brothers-of-Atlanta-6-by-Faleena-Hopkins.pdf
    • http://loaminoo.linkpc.net/1090090093097091099/Zig-Meier-und-die-Grube-von-Walden-Zbigniew-Meier-3-by-Stephan-Br-ggenthies.pdf
    • http://loaminoo.linkpc.net/1091099093094/Coming-Undone-Marine-4-by-Susan-Andersen.pdf
    • http://loaminoo.linkpc.net/2091096092093095/The-Girl-Most-Likely-To-by-Susan-Donovan.pdf
    • http://loaminoo.linkpc.net/2095094090098/Take-a-Chance-on-Me-by-Susan-Donovan.pdf
    • http://loaminoo.linkpc.net/5095098096095092/I-Want-Candy-by-Susan-Donovan.pdf
    • http://loaminoo.linkpc.net/4097095091091097/Knock-Me-Off-My-Feet-by-Susan-Donovan.pdf
    • http://loaminoo.linkpc.net/1091097091099/Not-That-Kind-of-Girl-Dog-Walkers-3-by-Susan-Donovan.pdf
    • http://loaminoo.linkpc.net/5091095095098099/Becoming-Free-in-the-Cotton-South-by-Susan-Eva-O-39-Donovan.pdf
    • http://loaminoo.linkpc.net/9099099098099091/Stadhuis-Bibliotheek-the-City-Hall-Library-Complex-by-Richard-Meier-in-the-Hague-by-Richard-Meier.pdf
    • http://loaminoo.linkpc.net/4097096094097097/Inside-Marine-One-Four-U-S-Presidents-One-Proud-Marine-and-the-World-s-Most-Amazing-Helicopter-by-Ray-L-39-Heureux.pdf
    • http://loaminoo.linkpc.net/2092095090096099/A-Candle-for-a-Marine-Always-a-Marine-18-by-Heather-Long.pdf
    • http://loaminoo.linkpc.net/3099096093092097/Marine-With-Benefits-Always-a-Marine-16-by-Heather-Long.pdf
    • http://loaminoo.linkpc.net/1092092091090/Summer-by-the-Sea-by-Susan-Wiggs.pdf
    • http://loaminoo.linkpc.net/9098097094096/The-Summer-Cottage-by-Susan-Kietzman.pdf
    • http://loaminoo.linkpc.net/5095

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