Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a51b180692c7a3…

MALICIOUS

PDF

13.9 KB Created: 2019-11-07 15:47:42 +00:00 Authoring application: mPDF 5.7
MD5: 2a51f5286fd7dd82ecb58e4542caee7e SHA-1: eda8fc8436429e1b79ef512a1a91707deff9d794 SHA-256: 26a51b180692c7a3be589f60b1fc98773940fa51e0c2e1d1f17e61f6bd49b086
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the sheer volume of links and the suspicious domain suggest a lure to a potentially malicious site or a large-scale content distribution effort.

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://cefasfese.4pu.com/7736737737732737/Anansi-and-the-Magic-Stick-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/1739730732738736/Little-Red-Hot-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/1731735730734733/Hanukkah-Bear-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/3731734739733737/Charlie-Drives-the-Stage-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/5736737731733731/Four-Dollars-and-Fifty-Cents-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/4731736736735736/The-Mysterious-Guests-A-Sukkot-Story-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/1739730732738734/Simon-and-the-Bear-A-Hanukkah-Tale-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/1739730732736734/Joha-Makes-a-Wish-A-Middle-Eastern-Tale-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/5730736738737730/The-Lady-in-the-Blue-Cloak-Legends-from-the-Texas-Missions-by-Eric-A-Kimmel.pdf
    • http://cefasfese.4pu.com/7736738730733739/Anansi-And-The-Magic-Drum-by-Roselyn-Byrne.pdf
    • http://cefasfese.4pu.com/1730731739730733/The-Magic-Hockey-Stick-by-Peter-Maloney.pdf
    • http://cefasfese.4pu.com/2735733738737738/The-Magic-Walking-Stick-by-John-Buchan.pdf
    • http://cefasfese.4pu.com/4739734736732730/The-Stick-Book-Loads-of-things-you-can-make-or-do-with-a-stick-by-Fiona-Danks.pdf
    • http://cefasfese.4pu.com/4739737731734735/Stick-Dog-Dreams-of-Ice-Cream-Stick-Dog-4-by-Tom-Watson.pdf
    • http://cefasfese.4pu.com/6731737739732733/Something-Rising-by-Haven-Kimmel.pdf
    • http://cefasfese.4pu.com/2734730730738731/Iodine-by-Haven-Kimmel.pdf
    • http://cefasfese.4pu.com/1733731730735/The-War-with-Grandpa-by-Robert-Kimmel-Smith.pdf
    • http://cefasfese.4pu.com/1734736733732732/Anansi-Boys-by-Neil-Gaiman.pdf
    • http://cefasfese.4pu.com/2739734730735730/Anansi-Boys-by-Neil-Gaiman.pdf
    • http://cefasfese.4pu.com/7736737737739730/Anansi-s-Narrow-Waist-by-Len-Cabral.pdf
    • http://cefasfese.4pu.com/4739734736732730/The-Stick-Book-Loads-of-things-you-can

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