Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dcb4bfaa8e9bea5…

MALICIOUS

PDF

18.4 KB Created: 2019-05-01 06:24:07 +01:00 Authoring application: mPDF 5.7
MD5: b4c4ae993308cf98cfaae5f94d411d7a SHA-1: 458a4085d5f5f4fc2b518429861152ee197473f2 SHA-256: 0dcb4bfaa8e9bea5a7b1ea685ba2f2ada1e75279dbc2719d8fa06d2730fcbd2c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to external PDF files, many of which use numeric slugs in their paths. This behavior is indicative of a link farm or SEO spam tactic, potentially used to drive traffic or distribute malicious content. The ML classifier also flagged this PDF as malicious, supporting the suspicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1095098097099092/The-Levanter-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/4091090093093090/Journey-Into-Fear-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/3093096090090096/Dirty-Story-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/1099092099099099/The-Intercom-Conspiracy-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/3093095094098096/A-Kind-Of-Anger-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/2093096097093091/Background-to-Danger-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/4091090094096099/A-Coffin-for-Dimitrios-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/3093096091096098/State-of-Siege-by-Eric-Ambler.pdf
    • http://loaminoo.linkpc.net/8098095099090097/The-Adventures-of-Caroline-And-the-Time-Machine-by-Eric-Oberst.pdf
    • http://loaminoo.linkpc.net/1098092099092/Out-of-Place-Out-of-Time-The-Testimony-of-Dr-Trenton-Stowel-by-Eric-D-Knapp.pdf
    • http://loaminoo.linkpc.net/8096095094095090/Starsongs-And-Unicorns-Journeys-Through-Time-And-Space-by-Eric-Norden.pdf
    • http://loaminoo.linkpc.net/5098098092099093/Puppy-Intensive-Care-A-Breeder-s-Guide-to-Care-of-Newborn-Puppies-by-Myra-Savant-harris.pdf
    • http://loaminoo.linkpc.net/1091094099097094097/The-Skull-of-Yorick-The-Emptiness-of-American-Thinking-at-a-Time-of-Grave-Peril-by-Eric-Larsen.pdf
    • http://loaminoo.linkpc.net/1099091094094099/Best-Care-Anywhere-Why-VA-Health-Care-Is-Better-Than-Yours-by-Phillip-Longman.pdf
    • http://loaminoo.linkpc.net/2093099091096091/Yellowstone-Has-Teeth-by-Marjane-Ambler.pdf
    • http://loaminoo.linkpc.net/3098098099094090/The-Ambler-Warning-by-Robert-Ludlum.pdf
    • http://loaminoo.linkpc.net/4095098094097096/Child-Care-A-Comprehensive-Guide-4-Volumes-Volume-1--Rationale-for-Child-Care-Services-Programs-Vs-Politics-by-Stevanne-Auerbach.pdf
    • http://loaminoo.linkpc.net/5094091093092096/Journey-to-the-Fatherless-Preparing-for-the-Journey-of-Adoption-Orphan-Care-Foster-Care-and-Humanitarian-Relief-for-Vulnerable-Children-by-Lawrence-E-Bergeron.pdf
    • http://loaminoo.linkpc.net/1091093093091098096/Emergency-Care-amp-Workbook-for-Emergency-Care-Package-13th-Edition-by-Daniel-Limmer.pdf
    • http://loaminoo.linkpc.net/4099099099098093/Time-Trip-A-Time-After-Time-Reincarnation-Novella-Time-After-Time-Reincarnation-Lives-Book-1-by-Wendy-Godding.pdf

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