Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4819f2d6cbdd22…

MALICIOUS

PDF

13.3 KB Created: 2019-04-30 04:17:05 +01:00 Authoring application: mPDF 5.7
MD5: 0e8f44866d073d51c824aff86c350d55 SHA-1: 457c511ce88369b0a295ba024133f40d78c9f945 SHA-256: fa4819f2d6cbdd22665d9b6d4408a366a390db51f1fd030085df3e22b30ca0e5
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, hosted on the domain loaminoo.linkpc.net. This behavior is indicative of a link farm or SEO spam campaign, designed to drive traffic to specific content. 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.lin
    • http://loaminoo.linkpc.net/3094097099095094/A-Temporary-Situation-Temporary-1-by-H-L-Day.pdf
    • http://loaminoo.linkpc.net/1094097096092094/Strictly-Temporary---Volume-One-Strictly-Temporary-1-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/1091092092094099099/The-Correspondence-of-John-Locke-3-Letters-849-1241-1686-89-by-John-Locke.pdf
    • http://loaminoo.linkpc.net/4091095098092091/Temporary-by-Sarina-Bowen.pdf
    • http://loaminoo.linkpc.net/4090093091099090/Temporary-Widow-by-Diana-L-Walker.pdf
    • http://loaminoo.linkpc.net/2095096098095092/Temporary-Mark-Collared-3-by-Kim-Dare.pdf
    • http://loaminoo.linkpc.net/2095092097097091/Temporary-Slave-by-Reese-Gabriel.pdf
    • http://loaminoo.linkpc.net/1093093099091098/The-Temporary-Wife-by-Mary-Balogh.pdf
    • http://loaminoo.linkpc.net/6095098096093098/Temporary-Fiancee-by-Judy-Rogers.pdf
    • http://loaminoo.linkpc.net/1096096091098099/The-Temporary-Gentleman-by-Sebastian-Barry.pdf
    • http://loaminoo.linkpc.net/1093095097095097/Temporary-Wife-by-Roberta-Leigh.pdf
    • http://loaminoo.linkpc.net/4096090096095095/Temporary-Preserves-by-David-Zinn.pdf
    • http://loaminoo.linkpc.net/7095099097098094/Temporary-Groom-Left-At-The-Altar-1-by-J-S-Scott.pdf
    • http://loaminoo.linkpc.net/2094096092090095/The-Temporary-Groom-Hawk-s-Way-9-by-Joan-Johnston.pdf
    • http://loaminoo.linkpc.net/3097092096092099/Temporary-Arrangement-The-Renaldis-0-5-by-Karen-Erickson.pdf
    • http://loaminoo.linkpc.net/1091094097093/Her-Temporary-Hero-Once-a-Marine-2-by-Jennifer-Apodaca.pdf
    • http://loaminoo.linkpc.net/2097093098091090/Incidents-of-Egotourism-in-the-Temporary-World-by-Lee-Klein.pdf
    • http://loaminoo.linkpc.net/4099094097091092/The-Temporary-Mrs-King-Kings-of-California-11-by-Maureen-Child.pdf
    • http://loaminoo.linkpc.net/1099094099099096/Temporary-High-Running-On-Empty-2-by-Colette-Ballard.pdf
    • http://loaminoo.linkpc.net/1090091093097091095/A-Temporary-Ghost-Georgia-Lee-Maxwell-2-by-Michaela-Thompson.pdf

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