Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bf4a35d484942f…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 02:16:53 +01:00 Authoring application: mPDF 5.7
MD5: b38ff0e876d9ddab69d439e087b3b3e0 SHA-1: a616df19eabd73cf0d54bafa2a72716b2151a6f5 SHA-256: 80bf4a35d484942f2773e6a9465c4a09259f709e772c8da924fa87fc8b612b5e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the URLs themselves are currently classified as benign, the sheer volume and the heuristic firing suggest an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/2095098099093090/Wuthering-Heights-amp-Jane-Eyre-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/1090093090096093095/Jane-Eyre-Sturmh-he-2-Klassiker-von-Geschwister-Bront---Vollst-ndige-deutsche-Ausgaben-Wuthering-Heights-Jane-Eyre-die-Waise-von-Lowood-Eine-Autobiographie-by-Charlotte-Bront-.pdf
    • http://loaminoo.linkpc.net/5093092090090095/VILLETTE-by-Charlotte-Bronte-author-of-Jane-Eyre-Shirley-Villette-Professor-Annotated-by-her-sister-s-The-Tenant-of-Wildfell-Hall-Agnes-Grey-and-Wuthering-Heights-by-Charlotte-Bront-.pdf
    • http://loaminoo.linkpc.net/2099090095090095/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/5095097097091/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/1091099095091091093/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/4096098094095094/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/6090096093098094/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/7097091093096096/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/6090094091091099/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/9094094096092097/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/6090090099092094/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/5096097093099090/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/7092093099098092/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/5093091092096091/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/6092090095093093/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/3091094090095090/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/5098098096094096/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/1090096093094091097/Wuthering-Heights-by-Emily-Bront-.pdf
    • http://loaminoo.linkpc.net/9092097090092096/Wuthering-Heights-by-Emily-Bront-.pdf

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