Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d27bc6a0499f3b7…

MALICIOUS

PDF

19.4 KB Created: 2019-11-09 23:19:04 +00:00 Authoring application: mPDF 5.7
MD5: 89cccad8412d9ed1a1b12ccb92a480ad SHA-1: 6f15eca35f90d09129e36afdc286624c3d28fb8d SHA-256: 6d27bc6a0499f3b7522eacd758dd73e5f7ecf7ab2bf91f772b00471bea3c584f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently classified as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of embedded URLs points to a potential redirection or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

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/9735739736738733/Gruber-s-Complete-GRE-Guide-by-Gary-R-Gruber.pdf
    • http://cefasfese.4pu.com/1730732730735738730/Du-das-brennt-by-G-nter-Gruber.pdf
    • http://cefasfese.4pu.com/1733733737731731/The-Book-of-Air-and-Shadows-by-Michael-Gruber.pdf
    • http://cefasfese.4pu.com/1731738735734736736/Berichte-Der-Naturforschenden-Gesellschaft-by-August-Gruber.pdf
    • http://cefasfese.4pu.com/1731739731734736735/Alles-an-seinem-Platz-by-Carola-Gruber.pdf
    • http://cefasfese.4pu.com/1733734733730737/Tropic-of-Night-Jimmy-Paz-1-by-Michael-Gruber.pdf
    • http://cefasfese.4pu.com/2731733739730735/Tale-of-a-Gentleman-Thief-by-Kurt-Gruber.pdf
    • http://cefasfese.4pu.com/7733735736735734/Bandit-s-Surprise-by-Karen-Rostoker-Gruber.pdf
    • http://cefasfese.4pu.com/9735739736738734/Health-Care-Reform-What-It-Is-Why-It-s-Necessary-How-It-Works-by-Jonathan-Gruber.pdf
    • http://cefasfese.4pu.com/8735735732732/The-church-and-the-Jews-The-biblical-relationship-by-Daniel-Gruber.pdf
    • http://cefasfese.4pu.com/9738731739739732/DELTA-OPERATOR-Eiskalte-Entscheidung-by-Marco-Gruber.pdf
    • http://cefasfese.4pu.com/1730732730733733730/Streghe-La-riscossa-delle-donne-in-Italia-by-Lilli-Gruber.pdf
    • http://cefasfese.4pu.com/9735739738731735/Inside-of-Time-My-Journey-from-Alaska-to-Israel-by-Ruth-Gruber.pdf
    • http://cefasfese.4pu.com/1731733730737733734/Kinesiologie-Energiebalance-f-r-mehr-Gelassenheit-und-Lebensfreude-by-Dr-phil-Isa-Gr-ber.pdf
    • http://cefasfese.4pu.com/9735732735735732/Aloisia---Eine-Hebamme-spielt-Schicksal-Landfrauen-9-by-Roswitha-Gruber.pdf
    • http://cefasfese.4pu.com/8738730730737737/Herrlichkeit-in-Schwachheit-Eine-Auslegung-Der-Apologie-Des-Zweiten-Korintherbriefs-2-Kor-2-14-6-13-by-Margareta-Gruber.pdf
    • http://cefasfese.4pu.com/9731731739734735/Zartliche-Betrachtung-Schoner-Damen-Photographien-Aus-Der-Sammlung-Gruber-by-Reinhold-Mi-elbeck.pdf
    • http://cefasfese.4pu.com/1731739730737739731/DIABOLOS-MMXIV-Horror-und-Grusel-Geschichten-internationaler-Bestseller-Autoren-by-Andreas-Gruber.pdf
    • http://cefasfese.4pu.com/7733733732731730/Public-Finance-and-Public-Policy-by-Jonathan-Gruber.pdf
    • http://cefasfese.4pu.com/3736734730735730/The-Secret-Language-of-Relationships-Your-Complete-Personology-Guide-to-Any-Relationship-with-Anyone-by-Gary-Goldschneider.pdf

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