Malicious PDF — malware analysis report

Static analysis result for SHA-256 9610b0eabaed0ddf…

MALICIOUS

PDF

15.9 KB Created: 2019-05-07 04:08:07 +01:00 Authoring application: mPDF 5.7
MD5: 9914bad5088715986aa884f526d9e1c2 SHA-1: 14de570460e2feb33a74067442a49117c0a0f8f7 SHA-256: 9610b0eabaed0ddfdc6bba18dc5050df30b54d9f760cd82de8392af2b204eb5c
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, forming a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a technique to distribute malicious content or engage in SEO abuse. While the specific intent of the linked PDFs is unclear, the sheer volume and the ML classifier's high confidence score suggest a malicious distribution or phishing attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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://xiixmcuin.linkpc.net/4201203201204203/Cassie-Palmer-Series-Cassandra-Palmer-1-4-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/2208201206201202/Masks-Cassandra-Palmer-6-5-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/2208201207204204/The-Queen-s-Witch-Cassandra-Palmer-0-6-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/2208201201203200/Tempt-the-Stars-Cassandra-Palmer-6-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/3205207206205/Embrace-the-Night-Cassandra-Palmer-3-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/3200206202207200/Touch-the-Dark-Cassandra-Palmer-1-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/2209203207203206/Touch-the-Dark-Cassandra-Palmer-1-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/3204203205206/Touch-the-Dark-Cassandra-Palmer-1-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/2200207204/Reap-the-Wind-Cassandra-Palmer-7-by-Karen-Chance.pdf
    • http://xiixmcuin.linkpc.net/2207207204208200/The-Bachelor-s-Bargain-Miss-Pickworth-Series-2-by-Catherine-Palmer.pdf
    • http://xiixmcuin.linkpc.net/2209209200206205/Healer-s-Quest-The-Renegade-World-Series-1-by-Jessica-Palmer.pdf
    • http://xiixmcuin.linkpc.net/1201207204200204203/Karen-Rose-Books-2017-Checklist-Reading-Order-of-Baltimore-Series-Chicago-Series-Cincinnati-Series-Daniel-Vartanian-Series-Romantic-Suspense-Series-and-List-of-All-Karen-Rose-Books-by-Series-List.pdf
    • http://xiixmcuin.linkpc.net/3203206200205209/Wanted-by-Dee-Palmer.pdf
    • http://xiixmcuin.linkpc.net/1202206206200200/Birthright-by-R-J-Palmer.pdf
    • http://xiixmcuin.linkpc.net/2204209208203/Emergence-by-David-R-Palmer.pdf
    • http://xiixmcuin.linkpc.net/3204208205201208/Lawless-by-Diana-Palmer.pdf
    • http://xiixmcuin.linkpc.net/2202203201201200/Seeing-Me-Naked-by-Liza-Palmer.pdf
    • http://xiixmcuin.linkpc.net/1207205203201202/The-MirrorMasters-by-Lora-Palmer.pdf
    • http://xiixmcuin.linkpc.net/1208203205204200/The-Last-Mercenary-by-Diana-Palmer.pdf
    • http://xiixmcuin.linkpc.net/2200200205204204/Heartless-by-Diana-Palmer.pdf
    • http://xiixmcuin.linkpc.net/1201207204200204203/Karen-Rose-Books-2017-Checklist-Reading-Order-of-Baltimore-Series-Chicago-Series-Cincinnati-Series-Daniel-Vartanian-Series-Romantic-Suspense-Series-and-List-of-All-Karen-Ros

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