Malicious PDF — malware analysis report

Static analysis result for SHA-256 699163f08a1d7f8e…

MALICIOUS

PDF

17.9 KB Created: 2019-05-04 11:08:52 +01:00 Authoring application: mPDF 5.7
MD5: 94e16d476268dd9002c15aa6ca79d09d SHA-1: 50b831c53a6c6686f6248827c8fed4a7cc11251b SHA-256: 699163f08a1d7f8e3b1159842c3ebfa9cbbda42649dd9e2fb83a0e556e362ede
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute further content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of external links suggests a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

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/2730733731735732/Bought-for-Marriage-by-Margaret-Mayo.pdf
    • http://cefasfese.4pu.com/9732735735734736/The-Child-within-the-Lotus-Human-Behaviour-from-Birth-by-Margaret-Stephenson-Meere.pdf
    • http://cefasfese.4pu.com/1731734731734739735/JULIA-EXTRA-BAND-0265-MIT-DEN-WAFFEN-DER-LIEBE-S-SSE-RACHE-IM-SILBERNEN-MONDSCHEIN-DAS-GEHEIMNIS-DER-KRONPRINZESSIN-ENTSCHEIDUNG-UNTER-SPANISCHER-SONNE-by-Margaret-Mayo.pdf
    • http://cefasfese.4pu.com/3735731736730/Collected-Poems-E-L-Mayo-by-E-L-Mayo.pdf
    • http://cefasfese.4pu.com/7736738738735/Mayo-Clinic-Guide-to-Your-Baby-s-First-Year-From-Doctors-Who-Are-Parents-Too-by-Mayo-Clinic.pdf
    • http://cefasfese.4pu.com/1730731730735736735/Concealed-in-Ash-by-Gwen-Mayo.pdf
    • http://cefasfese.4pu.com/3732736739736739/Other-Worlds-Other-Gods-by-Mayo-Mohs.pdf
    • http://cefasfese.4pu.com/2739731738735/Tucker-s-Reckoning-by-Matthew-P-Mayo.pdf
    • http://cefasfese.4pu.com/6736739737737738/Jimmy-and-Fay-A-Suspense-Novel-by-Michael-Mayo.pdf
    • http://cefasfese.4pu.com/1735730733737731/The-Last-Prince-of-the-Mexican-Empire-by-C-M-Mayo.pdf
    • http://cefasfese.4pu.com/8730733736731739/Mayo-Chiki-Vol-2-by-Hajime-Asano.pdf
    • http://cefasfese.4pu.com/2732738734731733/Bad-Behaviour-by-Liz-Byrski.pdf
    • http://cefasfese.4pu.com/1732734732736734/Murder-At-Mykenai-Odysseus-1-by-Catherine-Mayo.pdf
    • http://cefasfese.4pu.com/6733733735732737/Murder-on-the-Mullet-Express-by-Gwen-Mayo.pdf
    • http://cefasfese.4pu.com/1730734735731735732/Bad-Behaviour-by-Sheila-O-39-Flanagan.pdf
    • http://cefasfese.4pu.com/7739735736738735/Mayo-Clinic-on-Vision-and-Eye-Health-by-Helmut-Buettner.pdf
    • http://cefasfese.4pu.com/1737731738737736/Kinko-de-Mayo-Suncoast-Society-21-by-Tymber-Dalton.pdf
    • http://cefasfese.4pu.com/6730732737738734/In-Humbert-s-Footsteps-Mayo-1798-by-Stephen-Dunford.pdf
    • http://cefasfese.4pu.com/3733737736733737/Book-One-of-Angel-Series-by-Katie-Mayo-Jackson.pdf
    • http://cefasfese.4pu.com/9733734737736734/Mayo-Clinic-on-Prostate-Health-by-Michael-Blute.pdf

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