Malicious PDF — malware analysis report

Static analysis result for SHA-256 6160d5bcd68ca482…

MALICIOUS

PDF

16.3 KB Created: 2019-05-02 05:10:29 +01:00 Authoring application: mPDF 5.7
MD5: de3cc97f0a33da92af734482e05e4248 SHA-1: 7797619bd57bdd5d3f5dd15fb7e793db6547e309 SHA-256: 6160d5bcd68ca4822ede36a26720a2509efff34a6d455e49c84fe249e41f1e6f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, identified as a link farm. While the document body is heavily obfuscated, the heuristic 'PDF_SEO_LINK_FARM' indicates the primary purpose is to direct users to these external resources. The ML classifier also flagged the document as malicious, supporting this assessment. 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/9090093094097091/His-Dark-Materials-Illuminated-Critical-Essays-on-Philip-Pullman-s-Trilogy-by-Millicent-Lenz.pdf
    • http://loaminoo.linkpc.net/6091094093097099/His-Dark-Materials-The-Golden-Compass-The-Subtle-Knife-The-Amber-Spyglass-by-Philip-Pullman-Dec-6-2011-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/8093090098099/His-Dark-Materials-Trilogy-The-Golden-Compass-The-Subtle-Knife-The-Amber-Spyglass-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/4090094096092093/His-Dark-Materials-Omnibus-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/8097093095099/His-Dark-Materials-Omnibus-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/5098091093091/Northern-Lights-His-Dark-Materials-1-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/4099096091091090/The-Golden-Compass-His-Dark-Materials-1-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/3092093091096096/The-Amber-Spyglass-His-Dark-Materials-3-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/6091091094094094/Northern-Lights-His-Dark-Materials-1-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/5094090090092090/The-Golden-Compass-His-Dark-Materials-1-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/7092098099093/The-Amber-Spyglass-His-Dark-Materials-3-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/5093097098093/Lyra-s-Oxford-His-Dark-Materials-3-5-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/3094091090094096/The-Amber-Spyglass-His-Dark-Materials-3-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/3092091096090/Once-Upon-a-Time-in-the-North-His-Dark-Materials-0-5-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/3092094094096/The-Subtle-Knife-His-Dark-Materials-2-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/8096090093098/The-Amber-Spyglass-His-Dark-Materials-3-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/4096091095093090/Once-Upon-a-Time-in-the-North-His-Dark-Materials-0-5-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/5090094094092092/Northern-Lights-His-Dark-Materials-1-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/4092093093096/The-Amber-Spyglass-His-Dark-Materials-3-by-Philip-Pullman.pdf
    • http://loaminoo.linkpc.net/2090098099091091/The-Amber-Spyglass-His-Dark-Materials-3-by-Philip-Pullman.pdf

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