Malicious PDF — malware analysis report

Static analysis result for SHA-256 c085691f601c6188…

MALICIOUS

PDF

17.2 KB Created: 2019-05-01 17:19:06 +01:00 Authoring application: mPDF 5.7
MD5: b66e9db59cc488e2c8fd51a2fab8cad5 SHA-1: 48c311f071a9d3b44f9b23a5f939bf9a5e5b9f27 SHA-256: c085691f601c618866c23c8f9a38ce33f5f18c7bef43b1e86d4656147f329f81
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents, constituting a link farm. This technique is often used to manipulate search engine rankings or to distribute malicious content indirectly. While the specific URLs extracted were flagged as benign, the overall structure and the ML classifier's high confidence score indicate malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/1096099099098096/The-Green-Knight-s-Squire-The-Green-Knight-s-Squire-1-3-Moth-amp-Cobweb-1-3-by-John-C-Wright.pdf
    • http://loaminoo.linkpc.net/1093094092090/The-Lioness-and-Her-Knight-The-Squire-s-Tales-7-by-Gerald-Morris.pdf
    • http://loaminoo.linkpc.net/1094093095097099/Death-of-a-Squire-Templar-Knight-Mystery-2-by-Maureen-Ash.pdf
    • http://loaminoo.linkpc.net/4091093092091/The-Squire-s-Tale-The-Squire-s-Tales-1-by-Gerald-Morris.pdf
    • http://loaminoo.linkpc.net/2096091099096096/Douglas-Adams-s-Starship-Titanic-by-Terry-Jones.pdf
    • http://loaminoo.linkpc.net/1090093096095097/A-Knight-of-the-Word-Word-amp-Void-2-by-Terry-Brooks.pdf
    • http://loaminoo.linkpc.net/1090093094099091091/Lemmings-by-Ann-O-Squire.pdf
    • http://loaminoo.linkpc.net/2092096096099098/How-to-Win-at-Roulette-by-Norman-Squire.pdf
    • http://loaminoo.linkpc.net/8099091098094093/Culture-in-Psychology-by-Corrine-Squire.pdf
    • http://loaminoo.linkpc.net/7090098094094095/Foraging-Self-Sufficiency-by-David-Squire.pdf
    • http://loaminoo.linkpc.net/3092099093092093/Squire-Indigo-Knights-1-by-Jet-Mykles.pdf
    • http://loaminoo.linkpc.net/1090091091092094091/When-God-Winks-on-Love-by-Squire-D-Rushnell.pdf
    • http://loaminoo.linkpc.net/9094092095099099/Nanny-Oggs-Kochbuch-Ein-berraschend-n-tzlicher-Almanach-mit-erstaunlichen-Rezepten-aus-Terry-Pratchetts-Scheibenwelt-by-Terry-Pratchett.pdf
    • http://loaminoo.linkpc.net/1091099090091097098/Hidden-Lives-Secret-Gardens-The-Florentine-Villas-Gamberaia-La-Pietra-and-I-Tatti-by-Terry-Schnadelbac-R-Terry-Schnadelbach.pdf
    • http://loaminoo.linkpc.net/4090094091095098/Squire-Protector-of-the-Small-3-by-Tamora-Pierce.pdf
    • http://loaminoo.linkpc.net/3096092095091090/Remember-the-Alibi-by-Elizabeth-Daniels-Squire.pdf
    • http://loaminoo.linkpc.net/3094092090095/Squire-Protector-of-the-Small-3-by-Tamora-Pierce.pdf
    • http://loaminoo.linkpc.net/1093094097098/The-Ballad-of-Sir-Dinadan-The-Squire-s-Tales-5-by-Gerald-Morris.pdf
    • http://loaminoo.linkpc.net/2097095096099096/The-Squire-s-Tale-Sister-Frevisse-10-by-Margaret-Frazer.pdf
    • http://loaminoo.linkpc.net/2090095090096091/The-Legend-of-the-King-The-Squire-s-Tales-10-by-Gerald-Morris.pdf

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