Malicious PDF — malware analysis report

Static analysis result for SHA-256 625cd76ffb90d6e6…

MALICIOUS

PDF

14.9 KB Created: 2020-03-18 16:43:03 +00:00 Authoring application: mPDF 5.7
MD5: bed9faa6d3b0563ab17b4842176f8920 SHA-1: 3a4df23f8313620d7e9d9cf485cb203ac1cc2e6c SHA-256: 625cd76ffb90d6e6a1e52263fc80035c876419438e29418b09ce4cc68f1c363b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure and embedded URLs suggest an attempt to redirect the user to potentially harmful content, likely initiated via a phishing email.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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://calistazz.myhome.cx/3862868863868861/Bound-by-Darkness-Paladins-of-Darkness-7-by-Alexis-Morgan.pdf
    • http://calistazz.myhome.cx/1868867869862865/In-Darkness-Reborn-Paladins-of-Darkness-3-by-Alexis-Morgan.pdf
    • http://calistazz.myhome.cx/1868861865866862/Dark-Protector-Paladins-of-Darkness-1-by-Alexis-Morgan.pdf
    • http://calistazz.myhome.cx/2860866860861862/Bound-By-Darkness-Guardians-of-Eternity-8-by-Alexandra-Ivy.pdf
    • http://calistazz.myhome.cx/9865866866860866/Bound-in-Darkness-Drachen-Mates-2-by-Milly-Taiden.pdf
    • http://calistazz.myhome.cx/2869867864865860/A-Slave-to-the-Darkness-The-Black-Rose-2-by-Laura-Morgan.pdf
    • http://calistazz.myhome.cx/1862864867866865/Fire-in-the-Darkness-Darkness-2-by-Stacey-Marie-Brown.pdf
    • http://calistazz.myhome.cx/5867862868862/The-Grace-in-Darkness-Darkness-Duet-2-by-Melissa-Andrea.pdf
    • http://calistazz.myhome.cx/1861867860864867/Darkness-Fades-Darkness-Falls-3-by-Jessica-Sorensen.pdf
    • http://calistazz.myhome.cx/4863865865864860/Darkness-Unveiled-Cursed-in-Darkness-7-by-Natalie-Hancock.pdf
    • http://calistazz.myhome.cx/1863864861864863/Fire-in-the-Darkness-Darkness-2-by-Stacey-Marie-Brown.pdf
    • http://calistazz.myhome.cx/4863867861869/Scent-of-Darkness-Darkness-Chosen-1-by-Christina-Dodd.pdf
    • http://calistazz.myhome.cx/1864868867869867/Beast-in-the-Darkness-Darkness-2-5-by-Stacey-Marie-Brown.pdf
    • http://calistazz.myhome.cx/3860861866869862/Darkness-Deserved-Shattering-the-Darkness-1-by-Jessica-Spoon.pdf
    • http://calistazz.myhome.cx/4865865869861860/Lost-In-His-Darkness-Demons-Of-Darkness-1-by-Elizabeth-Hayes.pdf
    • http://calistazz.myhome.cx/1863862867867866/Darkness-of-Light-Darkness-1-by-Stacey-Marie-Brown.pdf
    • http://calistazz.myhome.cx/2865867867867867/Beast-in-the-Darkness-Darkness-2-5-by-Stacey-Marie-Brown.pdf
    • http://calistazz.myhome.cx/7860865867868/Into-the-Darkness-Darkness-Falls-1-by-Kira-Adams.pdf
    • http://calistazz.myhome.cx/4867862860863861/Darkness-Before-Dawn-Darkness-2-by-Claire-Contreras.pdf
    • http://calistazz.myhome.cx/1861865860860863/Darkness-Reigns-Darkness-Trilogy-2-by-L-M-Justus.pdf

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