Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0252c129b9f29d…

MALICIOUS

PDF

17.9 KB Created: 2019-05-03 17:37:42 +01:00 Authoring application: mPDF 5.7 First seen: 2020-12-25
MD5: 39b1378b230cf89c2b6df22bb83074d3 SHA-1: 21550675441317317cdc11aca1b6c3ac356d9c4e SHA-256: 4f0252c129b9f29d92fc66e31a92e69add2f3f804f779202c01a9d3fbcf9ebd9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this document as malicious. While no scripts were extracted, the sheer volume of 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 In PDF document text
    • http://cefasfese.4pu.com/9732735735734736/The-Child-within-the-Lotus-Human-Behaviour-from-Birth-by-Margaret-Stephenson-Meere.pdfIn PDF document text
    • 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.pdfIn PDF document text
    • http://cefasfese.4pu.com/3735731736730/Collected-Poems-E-L-Mayo-by-E-L-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/7736738738735/Mayo-Clinic-Guide-to-Your-Baby-s-First-Year-From-Doctors-Who-Are-Parents-Too-by-Mayo-Clinic.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730731730735736735/Concealed-in-Ash-by-Gwen-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/3732736739736739/Other-Worlds-Other-Gods-by-Mayo-Mohs.pdfIn PDF document text
    • http://cefasfese.4pu.com/2739731738735/Tucker-s-Reckoning-by-Matthew-P-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/6736739737737738/Jimmy-and-Fay-A-Suspense-Novel-by-Michael-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/1735730733737731/The-Last-Prince-of-the-Mexican-Empire-by-C-M-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/8730733736731739/Mayo-Chiki-Vol-2-by-Hajime-Asano.pdfIn PDF document text
    • http://cefasfese.4pu.com/2732738734731733/Bad-Behaviour-by-Liz-Byrski.pdfIn PDF document text
    • http://cefasfese.4pu.com/1732734732736734/Murder-At-Mykenai-Odysseus-1-by-Catherine-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/6733733735732737/Murder-on-the-Mullet-Express-by-Gwen-Mayo.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730734735731735732/Bad-Behaviour-by-Sheila-O-39-Flanagan.pdfIn PDF document text
    • http://cefasfese.4pu.com/7739735736738735/Mayo-Clinic-on-Vision-and-Eye-Health-by-Helmut-Buettner.pdfIn PDF document text
    • http://cefasfese.4pu.com/1737731738737736/Kinko-de-Mayo-Suncoast-Society-21-by-Tymber-Dalton.pdfIn PDF document text
    • http://cefasfese.4pu.com/6730732737738734/In-Humbert-s-Footsteps-Mayo-1798-by-Stephen-Dunford.pdfIn PDF document text
    • http://cefasfese.4pu.com/3733737736733737/Book-One-of-Angel-Series-by-Katie-Mayo-Jackson.pdfIn PDF document text
    • http://cefasfese.4pu.com/9733734737736734/Mayo-Clinic-on-Prostate-Health-by-Michael-Blute.pdfIn PDF document text

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