Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d82b1aefa6218b…

MALICIOUS

PDF

14.6 KB Created: 2019-05-03 05:12:37 +01:00 Authoring application: mPDF 5.7
MD5: ab8ab8cb6bde2b623c4fd7dbcb75249e SHA-1: 09f69ab70ef6edd13b62b34c81964cc8a903d1d6 SHA-256: d7d82b1aefa6218bf001901efd0d8c8aa6cf38dde30022005b6c4b2872dfdb5f
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, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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/4738731738730738/14-by-Peter-Clines.pdf
    • http://cefasfese.4pu.com/1733731739731735/Ex-Patriots-Ex-Heroes-2-by-Peter-Clines.pdf
    • http://cefasfese.4pu.com/8739731731737736/The-Junkie-Quatrain-by-Peter-Clines.pdf
    • http://cefasfese.4pu.com/2732731734739736/Ex-Patriots-Ex-Heroes-2-by-Peter-Clines.pdf
    • http://cefasfese.4pu.com/8739731732736735/Dead-Men-Can-t-Complain-and-Other-Stories-by-Peter-Clines.pdf
    • http://cefasfese.4pu.com/1735736732737735/Paradox-Special-Edition-The-Angels-Are-Here-Progeny-Of-Innocence-Paradox-1-2-by-Patti-Roberts.pdf
    • http://cefasfese.4pu.com/1730736733731731736/Bound-for-Gold-Peter-Fallon-6-by-William-Martin.pdf
    • http://cefasfese.4pu.com/3733733739735734/Bound-by-Lies-Bound-and-Broken-2-by-Rebecca-Shea.pdf
    • http://cefasfese.4pu.com/4731730737733730/Bound-by-Destiny-Ravage-MC-Bound-5-by-Ryan-Michele.pdf
    • http://cefasfese.4pu.com/7735732732730739/Bound-by-Affliction-Ravage-MC-Bound-4-by-Ryan-Michele.pdf
    • http://cefasfese.4pu.com/4737736733733732/Demon-Bound-Crescent-Bound-3-by-Karli-Rush.pdf
    • http://cefasfese.4pu.com/4736738730737736/Raven-Bound-Crescent-Bound-2-by-Karli-Rush.pdf
    • http://cefasfese.4pu.com/3739738739738730/Bound-by-Family-Ravage-MC-Bound-1-by-Ryan-Michele.pdf
    • http://cefasfese.4pu.com/2730736730730734/Bound-by-Blood-Bound-1-by-Cynthia-Eden.pdf
    • http://cefasfese.4pu.com/3733733739733735/Bound-for-Life-Bound-to-the-Bad-Boy-1-by-Alexis-Abbott.pdf
    • http://cefasfese.4pu.com/4736732732733733/Ice-Bound-Crescent-Bound-5-by-Karli-Rush.pdf
    • http://cefasfese.4pu.com/1732730733732730/Bound-by-Duty-Bound-1-by-Stormy-Smith.pdf
    • http://cefasfese.4pu.com/1739735734735735/Bound-by-Spells-Bound-2-by-Stormy-Smith.pdf
    • http://cefasfese.4pu.com/2730737736738730/Bound-in-Death-Bound-5-by-Cynthia-Eden.pdf
    • http://cefasfese.4pu.com/1739738735738737/BOUND-Bound-1-by-Jessica-Chase.pdf
    • http://cefasfese.4pu.com/373

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