Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef73c3a301d1596…

MALICIOUS

PDF

23.3 KB Created: 2019-04-30 05:35:16 +01:00 Authoring application: mPDF 5.7
MD5: 4cc08305b314947885278b3b753f4d58 SHA-1: 6c87f264ab8ea7d860aa467eceb05e4f4f7c1316 SHA-256: 6ef73c3a301d1596084a0ec71bd110399ca8f2493fe8b0a9c7dccadbc76801ef
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While many of these URLs are marked as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' suggest a deceptive pattern. The ML classifier also flagged the PDF as malicious. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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://seasasac.lflinkup.com/1da0da3da4da6da3da1/Principles-Of-Electrical-Engineering-And-Electronics-by-V-K-Mehta.pdf
    • http://seasasac.lflinkup.com/1da1da1da7da7da4da6/Fundamentals-Of-Electrical-Engineering-And-Electronics-by-B-L-Theraja.pdf
    • http://seasasac.lflinkup.com/1da1da1da7da9da2da6/Electrical-Engineering-Principles-and-Applications-by-Allan-R-Hambley.pdf
    • http://seasasac.lflinkup.com/6da5da7da0da2da3/Electrical-Engineering-Electrical-Engineering-by-Mahi.pdf
    • http://seasasac.lflinkup.com/1da1da1da7da9da0da3/Basic-Electrical-Engineering-by-T-K-Nagsarkar.pdf
    • http://seasasac.lflinkup.com/1da0da3da5da0da0da1/S-Chand-s-Principles-Of-Physics-For-XI-by-V-K-Mehta.pdf
    • http://seasasac.lflinkup.com/1da1da1da7da8da1da1/Electrical-Engineering-Fundamentals-by-Vincent-Del-Toro.pdf
    • http://seasasac.lflinkup.com/7da1da6da5da5da6/3rd-International-Conference-quot-Novel-Applications-of-Wide-Bandgap-Layers-quot-June-26-30-Zakopane-Poland-Abstract-Book-by-Institute-of-Electrical-and-Electronics-Engineers.pdf
    • http://seasasac.lflinkup.com/1da1da2da6da9da6da0/Proceedings-2011-International-Conference-on-Multimedia-and-Signal-Processing-Cmsp-2011-14-15-May-2011-Guilin-Guangxi-China-by-Institute-of-Electrical-and-Electronics-Engineers.pdf
    • http://seasasac.lflinkup.com/1da1da2da6da9da5da4/Energy-and-Environment-Technology-Proceedings-3v-International-Conference-on-Energy-and-Environment-Technology-2009-Guilin-Guangxi-China-by-Institute-of-Electrical-and-Electronics-Engineers.pdf
    • http://seasasac.lflinkup.com/1da1da8da2da1da5da6/Parker-Smith-s-458-Solutions-of-Problems-in-Electrical-Engineering-In-2-Vols-Vol-II-by-Parker-Smith.pdf
    • http://seasasac.lflinkup.com/1da0da3da2da5da4da9/Ultrafast-Electronics-and-Optoelectronics-From-the-Topical-Meeting-Ultrafast-Electronics-and-Optoelectronics-March-17-19-1997-Incline-Village-Ne-by-Martin-Nuss.pdf
    • http://seasasac.lflinkup.com/6da5da7da0da2da9/Learn-Digital-Electronics-Learn-Digital-Electronics-by-Mahi.pdf
    • http://seasasac.lflinkup.com/4da0da8da7da5da4/Are-You-The-One-For-Me-by-Chital-Mehta.pdf
    • http://seasasac.lflinkup.com/9da2da1da9da5da8/Progress-in-Precision-Engineering-Proceedings-of-the-6th-International-Precision-Engineering-Seminar-Ipes6-2nd-International-Conference-on-Ultrapre-by-Peter-Seyfried.pdf
    • http://seasasac.lflinkup.com/4da7da6da0da4da9/The-Ledge-Between-the-Streams-by-Ved-Mehta.pdf
    • http://seasasac.lflinkup.com/1da5da8da5da7da7/Inside-the-Haveli-by-Rama-Mehta.pdf
    • http://seasasac.lflinkup.com/3da8da9da4da6da4/Constellations-of-My-Body-by-Jessica-Mehta.pdf
    • http://seasasac.lflinkup.com/9da6da8da4da0/The-Suitable-Inheritor-by-Pushpendra-Mehta.pdf
    • http://seasasac.lflinkup.com/1da0da0da2da8da2/A-River-Sutra-by-Gita-Mehta.pdf