Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f9828b669fcb2f…

MALICIOUS

PDF

42.4 KB Created: 2019-11-09 21:39:58 +00:00 Authoring application: mPDF 5.7
MD5: b0f3d6581384842872882255179ccdc5 SHA-1: 137723d802ab091bf3a75f7f336d5d4db3709a8e SHA-256: 66f9828b669fcb2f7162c11cf2ea5d9acd2902f87e52c6ad65eefecf7727da4c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which point to external PDF files. The ML classifier also flagged this document as malicious. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to redirect users to potentially malicious content or engage in SEO spam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9703

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/7732739730738730/Articles-on-Novels-by-Guy-Gavriel-Kay-Including-Tigana-the-Fionavar-Tapestry-the-Sarantine-Mosaic-the-Lions-of-Al-Rassan-the-Summer-Tree-Ysabel-the-Last-Light-of-the-Sun-the-Wandering-Fire-the-Darkest-Road-Jad-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/8732738732738734/Guy-Gavriel-Kay-Books-Checklist-Reading-Order-of-Fionavar-Tapestry-Series-Sarantine-Mosaic-Series-Under-Heaven-Series-and-List-of-All-Guy-Gavriel-Kay-Books-by-Kevin-Hanson.pdf
    • http://cefasfese.4pu.com/3737732736730/The-Darkest-Road-The-Fionavar-Tapestry-3-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/3735731733731730/The-Darkest-Road-The-Fionavar-Tapestry-3-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/9739730732739738/Articles-on-Novels-by-Jeffrey-Eugenides-Including-The-Virgin-Suicides-Middlesex-Novel-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/1731733736737739736/Articles-on-Novels-by-Christopher-Paolini-Including-Eragon-Eldest-Brisingr-Book-4-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/2732736733736735/Articles-on-Novels-by-Ted-Dekker-Including-Circle-Trilogy-House-Novel-Thr3e-Showdown-Dekker-Novel-Obsessed-Novel-Saint-Novel-Skin-Novel-Blink-Novel-Black-Novel-Red-Novel-White-Novel-Chosen-Novel-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/5737735738733737/Articles-on-Novels-by-Scott-Westerfeld-Including-The-Secret-Hour-Uglies-Pretties-Specials-Novel-Peeps-Novel-So-Yesterday-Novel-the-Risen-Empire-the-Last-Days-Novel-Extras-Novel-Leviathan-Westerfeld-Novel-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/4738730734738730/Articles-on-Novels-by-Irvine-Welsh-Including-Glue-Novel-Trainspotting-Novel-Porno-Novel-Marabou-Stork-Nightmares-Filth-Novel-Ecstasy-Three-Tales-of-Chemical-Romance-the-Bedroom-Secrets-of-the-Master-Chefs-Skagboys-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/1730731730733733735/Articles-on-Novels-by-Philip-K-Dick-Including-The-Three-Stigmata-of-Palmer-Eldritch-Time-Out-of-Joint-a-Scanner-Darkly-Ubik-Do-Androids-Dream-of-Electric-Sheep-Radio-Free-Albemuth-the-Man-in-the-High-Castle-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/3733738735733/The-Lions-of-Al-Rassan-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/2737731736732732/Lions-Of-Al-Rassan-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/3734738730736/The-Fionavar-Tapestry-The-Fionavar-Tapestry-1-3-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/2736731737738/Lord-of-Emperors-The-Sarantine-Mosaic-2-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/3730732738732734/Sailing-to-Sarantium-The-Sarantine-Mosaic-1-by-Guy-Gavriel-Kay.pdf
    • http://cefasfese.4pu.com/7731735733738/Articles-on-Novels-by-Nicholas-Sparks-Including-The-Notebook-Message-in-a-Bottle-Novel-Nights-in-Rodanthe-the-Choice-Novel-Dear-John-Novel-the-Lucky-One-Novel-a-Walk-to-Remember-Novel-Nights-in-Rodanthe-Novel-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/1730739732733738735/Articles-on-Novels-by-Agatha-Christie-Including-Crooked-House-the-Secret-Adversary-N-or-M-the-Seven-Dials-Mystery-the-Secret-of-Chimneys-the-Man-in-the-Brown-Suit-the-Sittaford-Mystery-Why-Didn-t-They-Ask-Evans-Murder-Is-Easy-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/9732734732739/Articles-on-Enid-Blyton-Series-Including-The-Famous-Five-Series-the-Secret-Seven-Malory-Towers-the-Faraway-Tree-St-Clare-s-Series-the-Five-Find-Outers-the-Adventure-Series-the-Wishing-Chair-Series-the-Circus-Series-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/8730739737731730/Articles-on-Novels-By-Ian-Mcewan-by-Hephaestus-Books.pdf
    • http://cefasfese.4pu.com/9732733737734733/Articles-on-Novels-by-Thomas-Mann-Including-Death-in-Venice-Buddenbrooks-the-Magic-Mountain-Doctor-Faustus-Thomas-Mann-Novel-Mario-and-the-Magician-Lotte-in-Weimar-The-Beloved-Returns-Joseph-and-His-Brothers-Tonio-Kroger-by-Hephaestus-Books.pdf

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