Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a3df802328ced0…

MALICIOUS

PDF

14.3 KB Created: 2019-05-07 09:24:46 +01:00 Authoring application: mPDF 5.7
MD5: 16973a4eaeb6efc51a96b6cd7f72cdea SHA-1: 52c7ff2a0c5bde661cadd377e9abee4cc8dcff3c SHA-256: 08a3df802328ced06b1f56c163905480bceed9012dbac4890713577b1faffa46
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malware. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links and the ML detection strongly suggest malicious intent, likely related to spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/4093091098093095/The-Return-of-Dr-Fu-Manchu-by-Sax-Rohmer.pdf
    • http://loaminoo.linkpc.net/3094099098099099/The-Mystery-of-Dr-Fu-Manchu-by-Sax-Rohmer.pdf
    • http://loaminoo.linkpc.net/4093091098093098/The-Hand-of-Fu-Manchu-by-Sax-Rohmer.pdf
    • http://loaminoo.linkpc.net/4091094092098090/Manchu-by-Robert-S-Elegant.pdf
    • http://loaminoo.linkpc.net/8092091090096098/The-Power-of-Return-Return-to-Me-That-I-May-Return-to-You-by-John-Goyette.pdf
    • http://loaminoo.linkpc.net/9094096099098091/Gerhart-Hauptmann-by-Rolf-Rohmer.pdf
    • http://loaminoo.linkpc.net/9097095098097097/Amok-Wahn-Thriller-by-Henry-Rohmer.pdf
    • http://loaminoo.linkpc.net/5092094095090091/The-New-Wave-Truffaut-Godard-Chabrol-Rohmer-Rivette-by-James-Monaco.pdf
    • http://loaminoo.linkpc.net/9091096093090/The-Invisible-Hunters-Los-Cazadores-Invisibles-A-Legend-from-the-Mikito-Indians-of-Nicaragua-by-Harriet-Rohmer.pdf
    • http://loaminoo.linkpc.net/1098092093093092/Return-to-Newport-Return-to-Me-2-by-A-L-Parks.pdf
    • http://loaminoo.linkpc.net/1098092093094094/The-Return-Return-to-Me-1-by-A-L-Parks.pdf
    • http://loaminoo.linkpc.net/4091094096091098/The-Return-by-Lee-Olds.pdf
    • http://loaminoo.linkpc.net/4090094091098096/All-Who-Go-Do-Not-Return-by-Shulem-Deen.pdf
    • http://loaminoo.linkpc.net/1098092093090099/Return-of-the-Dapper-Men-by-Jim-McCann.pdf
    • http://loaminoo.linkpc.net/1090095098092098099/The-Return-by-Dinah-McCall.pdf
    • http://loaminoo.linkpc.net/4090090091095093/No-Return-by-Brett-Battles.pdf
    • http://loaminoo.linkpc.net/5092091098098094/Why-I-Return-to-Makoce-by-Lois-Red-Elk.pdf
    • http://loaminoo.linkpc.net/3099090092090095/About-a-Certain-Return-by-Samuel-Trenton.pdf
    • http://loaminoo.linkpc.net/3095097094091098/Return-to-Innocence-by-G-M-Frazier.pdf
    • http://loaminoo.linkpc.net/3098098096097091/The-Day-of-Their-Return-by-Poul-Anderson.pdf

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