Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84ec136c4d97ddd…

MALICIOUS

PDF

19.7 KB Created: 2019-07-29 07:05:26 +01:00 Authoring application: mPDF 5.7
MD5: 2c69519d25abfec3a1cd4257a007717e SHA-1: 78e9a2888fab1e341f6130b04e28459f6b495c0f SHA-256: f84ec136c4d97ddd957d8736a867bff8ddc9794be0cea7c5d6f758abe7106e5c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded external links, forming a link farm. The primary heuristic indicates this is a PDF SEO link farm, suggesting a malicious intent to drive traffic or distribute further content. While the ML classifier also flagged it as malicious, no scripts were extracted, and the URLs themselves were marked as confirmed benign, leading to a slightly reduced confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/1735737733735731/The-Mage-with-the-Dragon-Magic-The-Mage-with-the-Dragon-Magic-Series-3-by-Irfan-Mirza.pdf
    • http://cefasfese.4pu.com/2735734730735730/The-Dragon-s-Mage-Dragon-Mage-1-by-Kelly-Lucille.pdf
    • http://cefasfese.4pu.com/3737732739732736/The-Silver-Mage-Deverry-15-The-Dragon-Mage-7-by-Katharine-Kerr.pdf
    • http://cefasfese.4pu.com/5734730730736/Novels-By-Robin-Hobb-including-Assassin-s-Apprentice-Royal-Assassin-Assassin-s-Quest-Fool-s-Errand-novel-The-Golden-Fool-Shaman-s-Crossing-Fool-s-Fate-Ship-Of-Magic-Forest-Mage-Renegade-s-Magic-Dragon-Keeper-hobb-Novel-Ship-Of-Destiny-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/7737738739739/The-Fire-Dragon-Deverry-11-Dragon-Mage-3-by-Katharine-Kerr.pdf
    • http://cefasfese.4pu.com/4737730736738738/The-Fire-Dragon-The-Dragon-Mage-3-by-Katharine-Kerr.pdf
    • http://cefasfese.4pu.com/1735738730737733/The-Red-Wyvern-The-Dragon-Mage-1-by-Katharine-Kerr.pdf
    • http://cefasfese.4pu.com/4733735739736730/The-Dragon-s-Mouth-The-Last-Mage-1-by-Nikolai-Krimp.pdf
    • http://cefasfese.4pu.com/4731730739733737/The-Black-Raven-The-Dragon-Mage-2-by-Katharine-Kerr.pdf
    • http://cefasfese.4pu.com/2732737737737736/Lusam-The-Dragon-Mage-Wars-Book-One-by-Dean-Cadman.pdf
    • http://cefasfese.4pu.com/2730739730734738/The-Spirit-Stone-The-Silver-Wyrm-2-The-Dragon-Mage-5-by-Katharine-Kerr.pdf
    • http://cefasfese.4pu.com/1737737734730737/A-Mage-of-None-Magic-The-Heart-of-the-Sisters-1-by-A-Christopher-Drown.pdf
    • http://cefasfese.4pu.com/3735734732737/Magic-s-Promise-Valdemar-Last-Herald-Mage-2-by-Mercedes-Lackey.pdf
    • http://cefasfese.4pu.com/4737732732730732/Magic-s-Pawn-Valdemar-Last-Herald-Mage-1-by-Mercedes-Lackey.pdf
    • http://cefasfese.4pu.com/1739739736735/Magic-s-Pawn-Valdemar-Last-Herald-Mage-1-by-Mercedes-Lackey.pdf
    • http://cefasfese.4pu.com/1731738731738739737/The-Book-of-the-Sacred-Magic-of-Abra-Melin-the-Mage-As-Delivered-by-Abraham-the-Jew-Unto-His-Son-Lamech--A-D-458-by-Abraham-von-Worms.pdf
    • http://cefasfese.4pu.com/3733738734731737/Mistress-Mage-The-Mage-Born-Chronicles-2-by-Kayleigh-Nicol.pdf
    • http://cefasfese.4pu.com/1730739734732738737/Winter-s-Mage-The-Outcast-Mage-2-by-Miriam-Greystone.pdf
    • http://cefasfese.4pu.com/2732732734735736/Puff-the-Magic-Dragon-by-Peter-Yarrow.pdf
    • http://cefasfese.4pu.com/2739735735739731/Dragon-Unmasked-Earth-Magic-2-by-Kathleen-Nance.pdf
    • http://cefasfese.4pu.com/47

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