Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cd9d605b3efe00…

MALICIOUS

PDF

15.9 KB Created: 2019-06-04 11:58:11 +01:00 Authoring application: mPDF 5.7
MD5: 0a730317a4634b0794a93e2cb6d9fa65 SHA-1: cd3c0dec002f75c03972b46002b431539d49b5bd SHA-256: 33cd9d605b3efe00aff9fd0532bc9e9ffac02b5a8d6ce83ed785f029a1e6fe07
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, identified as a link farm. While the document body is heavily corrupted, the heuristic 'PDF_SEO_LINK_FARM' indicates the primary function is to host numerous external links. The ML classifier also flagged this PDF as malicious. The exact intent of the link farm is unclear due to the corrupted document body, but it is likely used for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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/6730733731732731/The-Therapist-as-Humanist-Social-Activist-and-Systemic-Thinker-And-Other-Selected-Papers-by-Cloe-Madanes.pdf
    • http://cefasfese.4pu.com/6730733732733738/Typical-Drama-with-Cloe-New-School-new-Life-by-Cloe-Demartino.pdf
    • http://cefasfese.4pu.com/6730733730739735/Cl-e-Lust-Perversiones-al-O-do-by-Cl-e-LUST.pdf
    • http://cefasfese.4pu.com/1736732736737732/Mirror-s-Hope-Mirror-Worlds-1-by-Justine-Alley-Dowsett.pdf
    • http://cefasfese.4pu.com/6736735738/Mirror-Mirror-by-Cara-Delevingne.pdf
    • http://cefasfese.4pu.com/6730733731738732/Leaps-of-Faith-by-Cloe-Oldenburg.pdf
    • http://cefasfese.4pu.com/6730733732734732/EL-ASESINO-DEL-KAMASUTRA-by-Cl-e-LUST.pdf
    • http://cefasfese.4pu.com/6730733731737739/The-Australians-Flowers-by-Daphne-and-Cloe.pdf
    • http://cefasfese.4pu.com/6730733731736735/Dafnis-y-Cloe-by-Juan-Valera.pdf
    • http://cefasfese.4pu.com/6730733732734736/T-nel-en-la-frontera-by-Clo-Korman.pdf
    • http://cefasfese.4pu.com/6730733731730739/Cloe-s-Pearl-by-Cindy-Phillips.pdf
    • http://cefasfese.4pu.com/2738735731735735/Mirror-Mirror-by-Les-Edgerton.pdf
    • http://cefasfese.4pu.com/6730733733731739/Les-Hommes-couleurs-Cadre-Rouge-by-Clo-Korman.pdf
    • http://cefasfese.4pu.com/6730733733730736/Das-ffnen-der-Muschel-Erotische-Novelle-Die-Venuswerdung-1-by-Clo-Collins.pdf
    • http://cefasfese.4pu.com/6730733731737730/Concubine-at-Birth-The-Warrior-Kings-Series-by-Cloe-Black.pdf
    • http://cefasfese.4pu.com/6730733732733736/Judas-the-Apostle-The-Cloe-Lejeune-Series-Book-1-by-Van-R-Mayhall-Jr-.pdf
    • http://cefasfese.4pu.com/6730733731737731/Howl-And-Growl-Wolf-And-Cat-Shifter-Paranormal-Romance-Howl-And-Growl-Series-Book-1-by-Cloe-Cullen.pdf
    • http://cefasfese.4pu.com/4733733730737739/Rembrandt-s-Mirror-by-Kim-Devereux.pdf
    • http://cefasfese.4pu.com/1731732731730737738/Priya-s-mirror-by-Ram-Devineni.pdf
    • http://cefasfese.4pu.com/2739739733737735/The-Goblin-Mirror-by-C-J-Cherryh.pdf

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