Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb81df97a447358…

MALICIOUS

PDF

18.5 KB Created: 2019-05-03 05:05:19 +01:00 Authoring application: mPDF 5.7
MD5: ac7dda242021c173df680aa301f09ae0 SHA-1: 5ba42dce1131aae730a88326fd3bd84304c65a42 SHA-256: bfb81df97a4473581246806c7ebab5b57c99808f0ddd128447555ecde0206c19
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links pointing to a single domain, 'cefasfese.4pu.com', which is indicative of an SEO poisoning or link farm attack. The ML classifier strongly flagged this PDF as malicious. The embedded links likely serve to redirect users to potentially malicious content or to manipulate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1731739732739733/The-Last-Gypsy-Princess-by-Alan-A-Larson.pdf
    • http://cefasfese.4pu.com/4730730734732736/Gypsy-Princess-by-Rosalie-K-Fry.pdf
    • http://cefasfese.4pu.com/2735733738737730/The-Gypsy-Princess-by-Phoebe-Gilman.pdf
    • http://cefasfese.4pu.com/9737735734739733/Gypsy-Jazz-In-Search-of-Django-Reinhardt-and-the-Soul-of-Gypsy-Swing-by-Michael-Dregni.pdf
    • http://cefasfese.4pu.com/4732732739731731/Gypsy-Hunted-Gypsy-Medium-1-by-Andrea-Drew.pdf
    • http://cefasfese.4pu.com/4732732737732738/Gypsy-Cradle-Gypsy-Medium-2-by-Andrea-Drew.pdf
    • http://cefasfese.4pu.com/2734733736737733/Gypsy-and-the-Moonstone-Stallion-Gypsy-3-by-Sharon-Wagner.pdf
    • http://cefasfese.4pu.com/4736735735730738/Gypsy-and-Nimblefoot-Gypsy-2-by-Sharon-Wagner.pdf
    • http://cefasfese.4pu.com/2733734736736736/Gypsy-from-Nowhere-Gypsy-1-by-Sharon-Wagner.pdf
    • http://cefasfese.4pu.com/4736735735730739/Gypsy-from-Nowhere-Gypsy-1-by-Sharon-Wagner.pdf
    • http://cefasfese.4pu.com/6730735736736/The-Complete-Princess-Trilogy-Princess-Princess-Sultana-s-Daughters-and-Princess-Sultana-s-Circle-by-Jean-Sasson.pdf
    • http://cefasfese.4pu.com/1730737730732732737/The-Fiction-of-J-Albin-Larson-by-J-Albin-Larson.pdf
    • http://cefasfese.4pu.com/4737738730734734/The-Princess-Problem-Guiding-Our-Girls-Through-the-Princess-Obsessed-Years-by-Rebecca-Hains.pdf
    • http://cefasfese.4pu.com/6738734732734732/Princess-Beading-Twenty-Projects-to-Make-the-Complete-Princess-by-Jema-39-Emilly-Ladybird-39-Hewitt.pdf
    • http://cefasfese.4pu.com/9730731732736/The-Princess-Test-The-Princess-Tales-2-by-Gail-Carson-Levine.pdf
    • http://cefasfese.4pu.com/3739737736731731/The-Princess-Companion-A-Retelling-of-The-Princess-and-the-Pea-The-Four-Kingdoms-1-by-Melanie-Cellier.pdf
    • http://cefasfese.4pu.com/5731737739737736/The-Last-Princess-The-Story-of-Princess-Ka-iulani-of-Hawai-i-by-Fay-Stanley.pdf
    • http://cefasfese.4pu.com/5736735730733737/The-Secret-Princess-The-Princess-Swap-2-by-Chikako-Kawakami.pdf
    • http://cefasfese.4pu.com/2731732736734730/Princess-in-Disguise-The-Wide-Awake-Princess-4-by-E-D-Baker.pdf
    • http://cefasfese.4pu.com/5732739739/Claimed-Princess-Princess-Series-3-by-Alexa-Riley.pdf
    • http://cefasfese.4pu.com/6730735736736/The-Complete-Princess-Trilogy-Princess-Princess-Sultana-s-Daughters-and-Princess-Sultana-s-Circle-by-Jea

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