Malicious PDF — malware analysis report

Static analysis result for SHA-256 500d2c0892de7966…

MALICIOUS

PDF

14.7 KB Created: 2019-05-05 08:46:39 +01:00 Authoring application: mPDF 5.7
MD5: 13cdc366d7f6979e11f5973f29e6918f SHA-1: b8fa551ad01c3335f27958b7c7056358061ec643 SHA-256: 500d2c0892de79666be5ecec7ef002fc954d92213152a38323a88ad170fc2aa9
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded links, forming a link farm, with the dominant host being cefasfese.4pu.com. This suggests a social engineering attack, likely aiming to lure users to malicious websites or download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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://cefasfese.4pu.com/6737737730736/Nothing-to-Be-Frightened-of-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/8732731736737733/Hygiene-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/1733739738739735/Talking-It-Over-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/3736731735735/Arthur-amp-George-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/3736737734738/Flaubert-s-Parrot-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/4734730738739731/The-Lemon-Table-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/1739735737739730/Through-the-Window-Seventeen-Essays-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/1731732734738736739/Through-the-Window-Seventeen-Essays-and-a-Short-Story-by-Julian-Barnes.pdf
    • http://cefasfese.4pu.com/8730736735736738/Julian-3-The-Works-of-the-Emperor-Julian-by-Julian-the-Apostate.pdf
    • http://cefasfese.4pu.com/8739733731737/After-The-Ending-The-Ending-1-by-Lindsey-Fairleigh.pdf
    • http://cefasfese.4pu.com/1734733733731736/Sense-of-Place-and-Sense-of-Planet-The-Environmental-Imagination-of-the-Global-by-Ursula-K-Heise.pdf
    • http://cefasfese.4pu.com/5736730731730730/Ending-the-Crisis-of-Capitalism-or-Ending-Capitalism-by-Samir-Amin.pdf
    • http://cefasfese.4pu.com/2738733732733/Ah-Julian-A-Memoir-of-Julian-Brodetsky-by-Leonard-Wibberley.pdf
    • http://cefasfese.4pu.com/7734732733736732/Emilie-Barnes-15-Minute-Home-and-Family-Organizer-by-Emilie-Barnes.pdf
    • http://cefasfese.4pu.com/3733731738/The-Ending-I-Want-by-Samantha-Towle.pdf
    • http://cefasfese.4pu.com/7732733738731732/Revels-Ending-by-Vic-Kerry.pdf
    • http://cefasfese.4pu.com/3736739737732/Ending-Up-by-Kingsley-Amis.pdf
    • http://cefasfese.4pu.com/1735731732737/The-Never-Ending-by-Andrew-Hudgins.pdf
    • http://cefasfese.4pu.com/8730739733734739/Ending-Nerve-by-Shaine-Greenwood.pdf
    • http://cefasfese.4pu.com/8734734738733736/Unique-s-Ending-by-Victor-L-Martin.pdf

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