Malicious PDF — malware analysis report

Static analysis result for SHA-256 09416bf71269b94b…

MALICIOUS

PDF

18.6 KB Created: 2020-03-13 23:00:55 +00:00 Authoring application: mPDF 5.7
MD5: 2cdd5e75bb937b1169b3a5bb6e50ead8 SHA-1: c93c56c6c9aece43f66ad321e2832cdfa4d0661b SHA-256: 09416bf71269b94bfc42809324261590df427865fd49a133bd7485e334db4bd7
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a large number of embedded URLs, indicative of a link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' specifically calls out the mass external PDF link farm, with the first URL being http://ieuicufioao.myhome.cx/3557554559556550/The-Flute-Keeper-s-Voyage-The-Flute-Keeper-Saga-2-by-Ashley-Setzer.pdf. This suggests the document's primary purpose is to lure users to external, potentially malicious, content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://ieuicufioao.myhome.cx/3557554559556550/The-Flute-Keeper-s-Voyage-The-Flute-Keeper-Saga-2-by-Ashley-Setzer.pdf
    • http://ieuicufioao.myhome.cx/1552554550555556/The-Flute-Keeper-s-Promise-The-Flute-Keeper-Saga-4-by-Ashley-Setzer.pdf
    • http://ieuicufioao.myhome.cx/3559551554558559/The-Keeper-s-Quest-The-Keeper-s-Saga-2-by-Kelly-Nelson.pdf
    • http://ieuicufioao.myhome.cx/3556550557556558/The-Keeper-s-Calling-The-Keeper-s-Saga-1-by-Kelly-Nelson.pdf
    • http://ieuicufioao.myhome.cx/3559551554559550/The-Keeper-s-Defiance-The-Keeper-s-Saga-3-by-Kelly-Nelson.pdf
    • http://ieuicufioao.myhome.cx/1551550555555551554/Play-Opera-the-Magic-Flute-Die-Zauberflote-Suite-for-Flute-and-Piano-Suite-Fur-Flote-Und-Klavier-by-Wolfgang-Amadeus-Mozart.pdf
    • http://ieuicufioao.myhome.cx/1551550555555552557/Progressive-Jazz-Studies-for-Flute---Intermediate-Level-Etudes-Progressives-de-Jazz-Pour-Flute---Niveau-Intermediaire-Fortschreitende-Jazz-Etuden-Fur-Flote---Mittlerer-Schwierigkeitsgrad-by-James-Rae.pdf
    • http://ieuicufioao.myhome.cx/4553559557556555/Marcus-The-Keeper-of-Lights-The-Keeper-Series-Book-1-by-John-Vice.pdf
    • http://ieuicufioao.myhome.cx/7554557552552556/The-Keeper-s-Quest-The-Second-Book-in-the-Keeper-s-Deries-by-MR-Peter-Bolton.pdf
    • http://ieuicufioao.myhome.cx/2555553559556/Keeper-of-the-Spirit-Keeper-1-by-Ruby-Storm.pdf
    • http://ieuicufioao.myhome.cx/2552556555553552/The-Keeper-Keeper-1-by-Sarah-Langan.pdf
    • http://ieuicufioao.myhome.cx/1557554559553554/The-Spirit-Keeper-The-Spirit-Keeper-1-by-Melissa-Luznicky-Garrett.pdf
    • http://ieuicufioao.myhome.cx/4557551559550550/The-Secret-Keeper-Holds-On-The-Secret-Keeper-4-by-Brea-Brown.pdf
    • http://ieuicufioao.myhome.cx/6557555558551552/The-Crystal-Keeper-Crystal-Keeper-1-3-by-Laurisa-White-Reyes.pdf
    • http://ieuicufioao.myhome.cx/1558557559555550/The-Dream-Keeper-Dream-Keeper-Chronicles-1-by-Mikey-Brooks.pdf
    • http://ieuicufioao.myhome.cx/4557551558559559/The-Secret-Keeper-Lets-Go-The-Secret-Keeper-5-by-Brea-Brown.pdf
    • http://ieuicufioao.myhome.cx/1553557550551/Kokopelli-s-Flute-by-Will-Hobbs.pdf
    • http://ieuicufioao.myhome.cx/6558559557552551/The-Flute-by-Valerie-A-Beauchene.pdf
    • http://ieuicufioao.myhome.cx/1556555553557551/The-Stone-and-the-Flute-by-Hans-Bemmann.pdf
    • http://ieuicufioao.myhome.cx/7557552552556551/Octave-and-His-Flute-by-G-rard-Moncomble.pdf

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