Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ab81b786be055a…

MALICIOUS

PDF

14.9 KB Created: 2019-11-09 22:45:31 +00:00 Authoring application: mPDF 5.7
MD5: 2fbf6dadf9720ca982ebb1909e85f614 SHA-1: 7b7393f5ce7d1bd41a77891ccd81a9429944e999 SHA-256: 88ab81b786be055a2136cbfaf5209f5e8cc2d36c192a98448a895cd4fc039b2b
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 pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily corrupted, limiting further analysis.

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/4739731733730731/The-Man-of-Her-Dreams-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/5730730738737737/Take-a-Walk-with-Me-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/5730730738737731/The-Unobtainable-One-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/4739734734730733/The-Pirate-Ruse-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/5730730738736738/The-General-s-Ambition-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/7737738733733/A-Crimson-Frost-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/5730730737733734/Indebted-Deliverance-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/7733730731738/The-Heavenly-Surrender-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/4733736730731732/The-Tide-of-the-Mermaid-Tears-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/5730730733733733/The-Light-of-the-Lover-s-Moon-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/3736733731734737/Born-for-Thorton-s-Sake-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/4736737739739739/Divine-Deception-Love-Notes-7-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/3738731734735738/The-Romancing-of-Evangeline-Ipswich-Three-Little-Girls-Dressed-in-Blue-Book-3-by-Marcia-Lynn-McClure.pdf
    • http://cefasfese.4pu.com/2734739733730737/Prophecy-of-the-Flame---Book-Two-Prophecy-of-the-Flame-2-by-Lynn-Hardy.pdf
    • http://cefasfese.4pu.com/1736738731739739/Prophecy-of-the-Flame-by-Lynn-Hardy.pdf
    • http://cefasfese.4pu.com/3739730733734732/Prophecy-of-the-Flame-by-Lynn-Hardy.pdf
    • http://cefasfese.4pu.com/3730738734733732/Prophecy-of-the-Flame-by-Lynn-Hardy.pdf
    • http://cefasfese.4pu.com/7736739733733731/Of-Flame-and-Light-Weird-Girls-7-Flame-1-by-Cecy-Robson.pdf
    • http://cefasfese.4pu.com/4731731735733730/Demons-of-the-Flame-Sea-Flame-Seas-2-by-Jean-Johnson.pdf
    • http://cefasfese.4pu.com/2736736737738738/Promise-of-the-Flame-The-Hidden-Flame-2-by-Sylvia-Engdahl.pdf
    • http://cefasfese.4pu.com/3738731734735738/The-Romancing-of-Evangeline-Ipswich-Three-Little-Girls-Dressed-in-Blue-Book-3-by-Marcia-Lynn-Mc

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