Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b31660b9ca5e26…

MALICIOUS

PDF

39.4 KB Created: 2019-11-07 21:55:55 +00:00 Authoring application: mPDF 5.7
MD5: 07a4afb6865e0989abecb92e54037333 SHA-1: b51ce29a4b8869f395e6f2056e125c7407f21b8c SHA-256: 88b31660b9ca5e26943b2e01721dafd0b8cb25808f01fe4ecac448e1a5e5aaee
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. While most of the linked URLs appear benign, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to distribute further malware. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9665

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/4738736739738730/Urgent-Justice-Vigilante-Justice-Thriller-Series-2-5-with-Jack-Lamburt-28K-word-quot-Thriller-Shot-quot-by-John-Etzil.pdf
    • http://cefasfese.4pu.com/2734738734735732/Fatal-Justice-Jack-Lamburt-1-by-John-Etzil.pdf
    • http://cefasfese.4pu.com/6730731739735731/Mister-E-s-Mysteries-Volume-6-quot-Where-Seldom-Is-Heard-a-Discouraging-Word-quot-quot-The-Case-of-the-Burqa-ed-Busker-quot-quot-The-Day-After-Memorial-Day-quot-by-Gerald-Elias.pdf
    • http://cefasfese.4pu.com/1730731731738731736/Ghost-Flight---Jagd-durch-den-Dschungel-Der-erste-Thriller-vom-quot-Ausgesetzt-in-der-Wildnis-quot--Star-by-Bear-Grylls.pdf
    • http://cefasfese.4pu.com/9730732731738737/-quot-Justice-for-the-oppressed---quot-the-political-dimension-in-the-language-use-of-Ng-g-wa-Thiong-o-by-Herta-Meyer.pdf
    • http://cefasfese.4pu.com/1731730733736738732/-sthetik-des-Verschwindens-bei-Christian-Kracht-Zur-Regression-in-quot-Faserland-quot-quot-1979-quot-quot-Ich-werde-hier-sein-im-Sonnenschein-und-im-Schatten-quot-und-quot-Metan-quot-by-S-ren-Benjamin-Sobbe.pdf
    • http://cefasfese.4pu.com/9737739735735734/Room-for-Manoeuvre-The-Role-of-Intertext-in-Elfriede-Jelinek-s-quot-Die-Klavierspielerin-quot-G-nter-Grass-s-quot-Ein-weites-Feld-quot-and-Herta-M-ller-s-quot-Niederungen-quot-und-quot-Reisende-auf-einem-Bein-quot-by-Morwenna-Symons.pdf
    • http://cefasfese.4pu.com/1730732730732730735/Karl-Kraus-Franz-Pfemfert-and-the-First-World-War-A-Comparative-Study-of-quot-Die-Fackel-quot-and-quot-Die-Aktion-quot-Between-1911-and-1928-by-John-D-Halliday.pdf
    • http://cefasfese.4pu.com/1730734730735734734/Vergleich-Der-Darstellung-Des-quot-Wunderbaren-quot-in-Johann-Hartliebs-quot-Alexanderroman-quot-Und-Gottfried-Von-Straburgs-quot-Tristan-quot-by-Katharina-Neuhaus.pdf
    • http://cefasfese.4pu.com/9736732738730732/Mahlzeiten-in-Thomas-Manns-Romanen-Eine-Studie-zu-quot-Buddenbrooks-quot-quot-Der-Zauberberg-quot-und-quot-Bekenntnisse-des-Hochstaplers-Felix-Krull-quot-by-Dominica-Triendl.pdf
    • http://cefasfese.4pu.com/9733735735739730/Liebesgl-ck-und-Sommerregen-Drei-romantische-Romane-in-einem-eBook-quot-Danke-f-r-die-Blumen-quot-quot-Busfahrt-in-den-7-Himmel-quot-und-quot-Unverhofft-kommt-oft-quot-by-Ashley-Bloom.pdf
    • http://cefasfese.4pu.com/4738730731733732/The-First-Adventures-Of-Little-Tim-Gift-Box-Set-quot-Little-Tim-And-The-Brave-Sea-Captain-quot-quot-Tim-And-Lucy-Go-To-Sea-quot-quot-Tim-To-The-Rescue-quot-by-Edward-Ardizzone.pdf
    • http://cefasfese.4pu.com/7737739736739736/The-Protectors-Vigilante-Justice-Vigilante-Cops-1-by-Bernard-Lee-DeLeo.pdf
    • http://cefasfese.4pu.com/8734731738732736/OF-HUMAN-BONDAGE-One-of-the-Top-100-Best-Novels-of-the-20th-century-by-the-prolific-British-playwright-novelist-and-short-story-writer-author-of-quot-The-Edge-quot-quot-The-Painted-Veil-quot-quot-Cakes-and-Ale-quot-by-W-Somerset-Maugham.pdf
    • http://cefasfese.4pu.com/1731736734735733738/Utopische-Prosa-ALS-L-Ngeres-Gedankenspiel-Untersuchungen-Zu-Arno-Schmidts-Theorie-Der-Modernen-Literatur-Und-Ihrer-Konkretisierung-in-quot-Schwarze-Spiegel-quot-quot-die-Gelehrtenrepublik-quot-Und-quot-Kaff-Auch-Mare-Crisium-quot-by-Boy-Hinrichs.pdf
    • http://cefasfese.4pu.com/4735731730737734/The-Essential-John-Stott-quot-The-Cross-of-Christ-quot-and-quot-The-Contemporary-Christian-quot-by-John-R-W-Stott.pdf
    • http://cefasfese.4pu.com/1730737739732736737/Gerhart-Hauptmann-quot-Bahnw-rter-Thiel-quot-quot-Vor-Sonnenaufgang-quot-quot-Der-Apostel-quot-quot-Der-Ketzer-von-Soana-quot-by-Gerhart-Hauptmann.pdf
    • http://cefasfese.4pu.com/2733730739735735/Making-Jack-Falcone-An-Undercover-FBI-Agent-Takes-Down-a-Mafia-Family-by-Joaquin-quot-Jack-quot-Garcia.pdf
    • http://cefasfese.4pu.com/2732738731730732/Ifferisms-An-Anthology-of-Aphorisms-That-Begin-with-the-Word-quot-IF-quot-by-Mardy-Grothe.pdf
    • http://cefasfese.4pu.com/3733730736735/My-Story-quot-A-Child-Called-It-quot-quot-The-Lost-Boy-quot-quot-A-Man-Named-Dave-quot-by-Dave-Pelzer.pdf
    • http://cefasfese.4pu.com/1730731731738731736/Ghost-Flight---Jagd-durch-den-Dschungel-Der-erste-Thrill

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