Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89c3cea0eadd275…

MALICIOUS

PDF

16.9 KB Created: 2019-05-05 05:02:58 +01:00 Authoring application: mPDF 5.7
MD5: c41ac928aa1f1221316fbbeebbb765d4 SHA-1: 77cc7ca61cfd0551453806e8596b98d60fb2ea21 SHA-256: f89c3cea0eadd275fc6f97d8f91c02f4d20b3468d158675658a4b146f95258ad
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample, and the document body consists primarily of these URLs.

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://cefasfese.4pu.com/3738731736/Anti-Stepbrother-by-Tijan.pdf
    • http://cefasfese.4pu.com/3730730735739735/LONGBOW-A-Billionaire-Stepbrother-With-Benefits-Romance-My-Stepbrother-s-Keeper-Book-4-by-Cynthia-Sharon.pdf
    • http://cefasfese.4pu.com/3730731737734737/Stepbrother-Studs-Taboo-A-Z-Boxed-Set-Volume-1-Stepbrother-Studs-1-5-by-Selena-Kitt.pdf
    • http://cefasfese.4pu.com/3736736739734733/The-Stepbrother-Games-Book-Two-Stepbrother-Games-2-by-Ophelia.pdf
    • http://cefasfese.4pu.com/1738733735731736/Stepbrother-With-Benefits-3-Stepbrother-with-Benefits-First-Season-3-by-Mia-Clark.pdf
    • http://cefasfese.4pu.com/1738733735734738/Stepbrother-With-Benefits-2-Stepbrother-with-Benefits-First-Season-2-by-Mia-Clark.pdf
    • http://cefasfese.4pu.com/1738733736732733/Stepbrother-With-Benefits-17-Stepbrother-with-Benefits-Third-Season-5-by-Mia-Clark.pdf
    • http://cefasfese.4pu.com/1738733736731736/Stepbrother-With-Benefits-14-Stepbrother-with-Benefits-Third-Season-2-by-Mia-Clark.pdf
    • http://cefasfese.4pu.com/1738733735734735/Stepbrother-With-Benefits-5-Stepbrother-with-Benefits-First-Season-5-by-Mia-Clark.pdf
    • http://cefasfese.4pu.com/3736736739735732/The-Stepbrother-Games-Book-One-Stepbrother-Games-1-by-Ophelia.pdf
    • http://cefasfese.4pu.com/1738733736730735/Stepbrother-With-Benefits-9-Stepbrother-with-Benefits---Second-Season-3-by-Mia-Clark.pdf
    • http://cefasfese.4pu.com/1738733732738732/Green-Smoothie-Recipe-Book-Anti-Inflammatory-Green-Smoothie-Recipes-for-Weight-Loss-Detox-Anti-Aging-amp-So-Much-More-by-Stephanie-Shaw.pdf
    • http://cefasfese.4pu.com/8731731739/Bad-Boy-Brody-by-Tijan.pdf
    • http://cefasfese.4pu.com/1733734735737737/Kian-by-Tijan.pdf
    • http://cefasfese.4pu.com/3737735732736736/Evil-by-Tijan.pdf
    • http://cefasfese.4pu.com/4730734736738731/Logan-Kade-by-Tijan.pdf
    • http://cefasfese.4pu.com/1737733739733732/Jadeite-Jaded-3-1-by-Tijan.pdf
    • http://cefasfese.4pu.com/7732735734731/Brady-Remington-Landed-Me-in-Jail-by-Tijan.pdf
    • http://cefasfese.4pu.com/2739738736732731/Davy-Harwood-The-Immortal-Prophecy-1-by-Tijan.pdf
    • http://cefasfese.4pu.com/2739738736736730/Davy-Harwood-in-Transition-The-Immortal-Prophecy-2-by-Tijan.pdf
    • http://cefasfese.4pu.com/1738733735734735/Stepbrother

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