Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52e8da6c4581fc0…

MALICIOUS

PDF

26.4 KB Created: 2020-03-14 00:15:44 +00:00 Authoring application: mPDF 5.7
MD5: 5b95b3c94c11e13d92ce1ed2c7006337 SHA-1: f9a965f78a3e87931968bcbf5035a895cdea4bbc SHA-256: b52e8da6c4581fc0a06527b7adf2e46a5d8e28cd102706a7edd5f3a98ea78733
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated, but the presence of numerous links suggests an attempt to direct users to external resources, likely for malicious purposes such as malware distribution or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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://rtuninnsi.myhome.cx/46a76a96a76a86a9/Oops-20-Life-Lessons-from-the-Fiascoes-That-Shaped-America-by-Martin-J-Smith.pdf
    • http://rtuninnsi.myhome.cx/16a86a66a76a26a1/Poplorica-A-Popular-History-of-the-Fads-Mavericks-Inventions-and-Lore-That-Shaped-Modern-America-by-Martin-J-Smith.pdf
    • http://rtuninnsi.myhome.cx/46a66a76a56a96a5/The-Jane-Austen-Guide-to-Life-Thoughtful-Lessons-for-the-Modern-Woman-by-Lori-Smith.pdf
    • http://rtuninnsi.myhome.cx/16a36a26a86a36a3/Injustice-Life-and-Death-in-the-Courtrooms-of-America-by-Clive-Stafford-Smith.pdf
    • http://rtuninnsi.myhome.cx/26a26a46a96a66a5/After-Life-Lessons-Book-One-After-Life-Lessons-1-by-Laila-Blake.pdf
    • http://rtuninnsi.myhome.cx/26a66a36a76a1/The-Pear-Shaped-Man-Pulphouse-Short-Story-Paperbacks-Ssp-37-by-George-R-R-Martin.pdf
    • http://rtuninnsi.myhome.cx/46a76a16a36a46a7/A-Revolution-in-Eating-How-the-Quest-for-Food-Shaped-America-by-James-McWilliams.pdf
    • http://rtuninnsi.myhome.cx/66a86a46a86a66a4/Clashes-of-Will-Great-Confrontations-That-Have-Shaped-Modern-America-by-John-Broesamle.pdf
    • http://rtuninnsi.myhome.cx/36a46a56a56a06a5/Occult-America-The-Secret-History-of-How-Mysticism-Shaped-Our-Nation-by-Mitch-Horowitz.pdf
    • http://rtuninnsi.myhome.cx/26a56a86a16a96a2/Occult-America-The-Secret-History-of-How-Mysticism-Shaped-Our-Nation-by-Mitch-Horowitz.pdf
    • http://rtuninnsi.myhome.cx/56a36a86a96a26a7/Huck-Finn-s-America-Mark-Twain-and-the-Era-That-Shaped-His-Masterpiece-by-Andrew-Levy.pdf
    • http://rtuninnsi.myhome.cx/16a16a56a26a26a76a7/Founding-Grammars-How-Early-America-s-War-over-Words-Shaped-Today-s-Language-by-Rosemarie-Ostler.pdf
    • http://rtuninnsi.myhome.cx/66a86a06a06a36a1/The-Infidel-and-the-Professor-David-Hume-Adam-Smith-and-the-Friendship-That-Shaped-Modern-Thought-by-Dennis-C-Rasmussen.pdf
    • http://rtuninnsi.myhome.cx/16a56a96a36a46a3/America-s-Hidden-History-Untold-Tales-of-the-First-Pilgrims-Fighting-Women-and-Forgotten-Founders-Who-Shaped-a-Nation-by-Kenneth-C-Davis.pdf
    • http://rtuninnsi.myhome.cx/16a36a06a16a56a2/Lessons-from-Shadow-My-Life-Lessons-for-Boys-and-Girls-by-Shadow-Bregman.pdf
    • http://rtuninnsi.myhome.cx/26a96a76a26a56a2/Lessons-In-Being-A-Flapper-by-Angela-Smith.pdf
    • http://rtuninnsi.myhome.cx/36a16a96a46a66a6/Mark-947-A-Life-Shaped-by-God-Gender-and-Force-of-Will-by-Calpernia-Sarah-Addams.pdf
    • http://rtuninnsi.myhome.cx/56a66a76a36a06a3/MY-TROTRO-DIARIES-Life-Lessons-Inspirations-from-Everyday-Life-by-Sefakor-Agbenyegah.pdf
    • http://rtuninnsi.myhome.cx/16a96a76a86a6/Acting-Equals-Life-An-Actor-s-Life-Lessons-by-Michael-Kearns.pdf
    • http://rtuninnsi.myhome.cx/66a16a36a56a96a9/PAW-PRINTS-IN-MY-HEART-Life-lessons-learned-from-the-dog-of-my-life-by-Andrew-Hessel.pdf
    • http://rtuninnsi.myhome.cx/26a26a4