Malicious PDF — malware analysis report

Static analysis result for SHA-256 21f22e919460af9b…

MALICIOUS

PDF

25.1 KB Created: 2019-04-30 03:47:53 +01:00 Authoring application: mPDF 5.7
MD5: 5dd9fe45104faac2ad5e59dcfeecb0e5 SHA-1: 0833da937dda3d85668009442c5794d782260d94 SHA-256: 21f22e919460af9b3648fb1d58446afe4601c2034bd67d375cf09ce4417857b1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

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://muicuiu.dumb1.com/6a09a03a03a05a03/Marriage-Made-in-Heaven-A-Love-Story-in-Letters-by-Vatsala-Sperling.pdf
    • http://muicuiu.dumb1.com/6a09a03a04a07a00/The-Magical-Adventures-of-Krishna-How-a-Mischief-Maker-Saved-the-World-by-Vatsala-Sperling.pdf
    • http://muicuiu.dumb1.com/3a01a05a01a05a07/Three-Made-In-Heaven-Made-in-Heaven-1-by-Elena-Kincaid.pdf
    • http://muicuiu.dumb1.com/9a09a03a05a04a07/Marriage-The-Unbroken-Marriage---10-Ways-to-Grow-Together-As-A-Couple-And-Save-Your-Marriage-Marriage-Of-Convenience-Marriage-Matters-Marriage-Help-Marriage-Bargain-Marriage-Help-Books-by-Sarah-Riedel.pdf
    • http://muicuiu.dumb1.com/6a09a03a02a02a00/phychology-made-simple-by-A-Sperling.pdf
    • http://muicuiu.dumb1.com/6a09a03a03a06a05/Mathematics-Made-Simple-by-Abraham-Sperling.pdf
    • http://muicuiu.dumb1.com/3a00a07a00a05a06/Three-Fifths-of-Love-A-Story-of-Gay-Marriage-in-New-York-by-Sarah-Warden.pdf
    • http://muicuiu.dumb1.com/4a08a08a06a01a01/First-Comes-Marriage-My-Not-So-Typical-American-Love-Story-by-Huda-Al-Marashi.pdf
    • http://muicuiu.dumb1.com/4a02a09a06a05a01/Love-Times-Three-Our-True-Story-of-a-Polygamous-Marriage-by-Joe-Darger.pdf
    • http://muicuiu.dumb1.com/6a01a05a04a03a07/Letters-to-Erik-The-Ghost-s-Love-Story-by-An-Wallace.pdf
    • http://muicuiu.dumb1.com/1a01a01a00a00a07a00/Sunsets-and-New-Beginnings-A-Heaven-s-Beach-Love-Story-Book-1-by-Teri-Riggs.pdf
    • http://muicuiu.dumb1.com/6a05a06a09a04a05/Loveology-God-Love-Marriage-Sex-And-the-never-ending-story-of-male-and-female-by-John-Mark-Comer.pdf
    • http://muicuiu.dumb1.com/7a02a07a00a00/Letters-From-Berlin-A-Story-of-War-Survival-and-the-Redeeming-Power-of-Love-and-Friendship-by-Kerstin-Lieff.pdf
    • http://muicuiu.dumb1.com/7a07a01a01a01a09/Heaven-is-for-Real-Deluxe-Edition-A-Little-Boy-s-Astounding-Story-of-His-Trip-to-Heaven-and-Back-by-Todd-Burpo.pdf
    • http://muicuiu.dumb1.com/1a06a02a03a04a03/The-Courtship-of-Two-Doctors-A-1930s-Love-Story-of-Letters-Hope-amp-Healing-by-Martha-Holoubek-Fitzgerald.pdf
    • http://muicuiu.dumb1.com/4a04a06a00a09a05/Marriage-a-History-From-Obedience-to-Intimacy-or-How-Love-Conquered-Marriage-by-Stephanie-Coontz.pdf
    • http://muicuiu.dumb1.com/4a03a06a07a06a09/To-Heaven-and-Back-A-Doctor-s-Extraordinary-Account-of-Her-Death-Heaven-Angels-and-Life-Again-A-True-Story-by-Mary-C-Neal.pdf
    • http://muicuiu.dumb1.com/4a00a08a07a05a08/When-The-Marriage-is-made-in-comedy-circus-by-Deepali-Basur.pdf
    • http://muicuiu.dumb1.com/7a03a05a01a09/Letters-from-Heaven-Cartas-del-cielo-by-Lydia-Gil.pdf
    • http://muicuiu.dumb1.com/1a00a00a08a02a00/Calcium-Made-Interesting-Sketches-Letters-Essays-amp-Gondolas-by-Graham-Chapman.pdf