Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f79f48948a34f5…

MALICIOUS

PDF

18.1 KB Created: 2019-04-30 06:34:52 +01:00 Authoring application: mPDF 5.7
MD5: ee7d7b0e63883cc424e84393c75052f6 SHA-1: 1da6503cd654e7419a50fe7c25165a764b75e354 SHA-256: 98f79f48948a34f5c30944a854a1fdba723c2871c7d05cc8c6330361676d0668
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the specific URLs themselves were flagged as benign, the sheer volume and the suspicious domain suggest a coordinated effort to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://xiixmcuin.linkpc.net/4207202208205202/First-World-Problems-101-Reasons-Why-The-Terrorists-Hate-Us-by-Ben-Nesvig.pdf
    • http://xiixmcuin.linkpc.net/2208202200206200/99-Reasons-to-Hate-Cats-by-Tom-Briscoe.pdf
    • http://xiixmcuin.linkpc.net/4203200206202207/52-Reasons-to-Hate-My-Father-by-Jessica-Brody.pdf
    • http://xiixmcuin.linkpc.net/7202206203206/Don-t-Hate-the-Player-Hate-the-Game-by-Katie-Ashley.pdf
    • http://xiixmcuin.linkpc.net/9207204201203/So-Many-Reasons-Why-So-Many-Reasons-1-by-Missy-Johnson.pdf
    • http://xiixmcuin.linkpc.net/5203208201200204/Numpty-Solutions-to-Everyday-Problems-Including-How-to-Try-to-Prevent-World-War-Iii-by-Andre-F-Depuis.pdf
    • http://xiixmcuin.linkpc.net/1204202206205205/Talk-to-the-Hand-The-Utter-Bloody-Rudeness-of-the-World-Today-or-Six-Good-Reasons-to-Stay-Home-and-Bolt-the-Door-by-Lynne-Truss.pdf
    • http://xiixmcuin.linkpc.net/2207206206209207/I-Hate-You-More-Than-Anyone-Vol-1-I-Hate-You-More-Than-Anyone-1-by-Banri-Hidaka.pdf
    • http://xiixmcuin.linkpc.net/1200200205208203208/I-Hate-You-More-Than-Anyone-Vol-5-I-Hate-You-More-Than-Anyone-5-by-Banri-Hidaka.pdf
    • http://xiixmcuin.linkpc.net/9202202200204208/1000-Reasons-to-Be-Happy-1000-Reasons-by-David-Baird.pdf
    • http://xiixmcuin.linkpc.net/1202200200203202/Problems-of-Translation-or-Charlie-s-Comic-Terrifying-Romantic-Loopy-Round-the-World-Journey-in-Search-of-Linguistic-Happiness-by-Jim-Story.pdf
    • http://xiixmcuin.linkpc.net/2206207207200205/The-Terrorists-Martin-Beck-10-by-Maj-Sj-wall.pdf
    • http://xiixmcuin.linkpc.net/1201201203204203202/the-secret-terrorists-by-Bill-Hughes.pdf
    • http://xiixmcuin.linkpc.net/1200205208208209/The-Terrorists-of-Irustan-by-Louise-Marley.pdf
    • http://xiixmcuin.linkpc.net/8202208204205208/The-Terrorists-Martin-Beck-10-by-Maj-Sj-wall.pdf
    • http://xiixmcuin.linkpc.net/1201201203203206208/The-Last-Day-Armageddon-by-Terrorists-by-Bill-Yancey.pdf
    • http://xiixmcuin.linkpc.net/4203205206208207/Tess-Terrorists-and-the-Tiara-by-Terry-Baldwin.pdf
    • http://xiixmcuin.linkpc.net/1201201203206203208/Talking-to-Terrorists-How-to-End-an-Armed-Conflict-by-Jonathan-Powell.pdf
    • http://xiixmcuin.linkpc.net/2200208208204203/Terrorists-or-Freedom-Fighters-Reflections-on-the-Liberation-of-Animals-by-Steven-Best.pdf
    • http://xiixmcuin.linkpc.net/1201201203202209201/Talking-to-the-Enemy-Faith-Brotherhood-and-the-Un-Making-of-Terrorists-by-Scott-Atran.pdf
    • http://xiixmcuin.linkpc.net/1204202206205205/Talk-to-the-Hand-The-Utter-Bloody