Malicious PDF — malware analysis report

Static analysis result for SHA-256 9319732a3df57016…

MALICIOUS

PDF

27.1 KB Created: 2019-11-09 18:51:36 +00:00 Authoring application: mPDF 5.7
MD5: b541fb56ef656cd43fdf0f4f5880d451 SHA-1: 11aac87c52b6d6aafae04a1f6df6d9544b6d6808 SHA-256: 9319732a3df570165f1fdf49529a0a354263aba507c8a8aed9763140c198ed21
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 distribute malicious content. The ML classifier also flagged this PDF as malicious. The dominant host for these links is 'cefasfese.4pu.com'. No scripts were extracted, and the document body was unreadable.

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://cefasfese.4pu.com/2732739730736737/M-C-Higgins-the-Great-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/4739733733736739/M-C-Higgins-the-Great-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/1731737738732734/Faerytale-Discovery-by-Virginia-Higgins.pdf
    • http://cefasfese.4pu.com/1733739738737/Junius-Over-Far-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/9732736731739731/Dustland-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/4738734737736739/The-Gathering-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/1733731738731734/Cousins-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/9731736732733/The-Bells-of-Christmas-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/4736736738733/The-Planet-of-Junior-Brown-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/4731736732732731/The-Girl-Who-Spun-Gold-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/3730738733738/Great-North-Road-by-Peter-F-Hamilton.pdf
    • http://cefasfese.4pu.com/9731735739738/Her-Stories-African-American-Folktales-Fairy-Tales-and-True-Tales-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/1731735734732734739/Rheinsberg-Memorials-Of-Frederick-The-Great-And-Prince-Henry-Of-Prussia-Volume-2-by-Andrew-Hamilton.pdf
    • http://cefasfese.4pu.com/1731735734732734733/Rheinsberg-Memorials-of-Frederick-the-Great-and-Prince-Henry-of-Prussia-Volume-1-by-Andrew-Hamilton.pdf
    • http://cefasfese.4pu.com/9735737731736739/The-Official-Letters-of-Alexander-Spotswood-Lieutenant-Governor-of-the-Colony-of-Virginia-1710-1722-Vol-1-Now-First-Printed-from-the-Manuscript-in-the-Collections-of-the-Virginia-Historical-Society-by-Virginia-Lieutenant-Governor.pdf
    • http://cefasfese.4pu.com/1731735734732735737/Rheinsberg-Memorials-of-Frederick-the-Great-and-Prince-Henry-of-Prussia-Volume-I---Scholar-s-Choice-Edition-by-Andrew-Hamilton.pdf
    • http://cefasfese.4pu.com/1734734736732/The-House-of-Dies-Drear-Dies-Drear-Chronicles-1-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/9735737731737730/The-Official-Letters-of-Alexander-Spotswood-Lieutenant-Governor-of-the-Colony-of-Virginia-1710-1722-Now-First-Printed-from-the-Manuscript-in-the-Collections-of-the-Virginia-Historical-Society-Volume-1---Scholar-s-Choice-Edition-by-1710-1722-Virginia-Lieutenant-Governor.pdf
    • http://cefasfese.4pu.com/9735737731736738/The-Official-Letters-of-Alexander-Spotswood-Lieutenant-Governor-of-the-Colony-of-Virginia-1710-1722-Now-First-Printed-from-the-Manuscript-in-the-Collections-of-the-Virginia-Historical-Society-Volume-1-by-1710-1722-Virginia-Lieutenant-Governor.pdf
    • http://cefasfese.4pu.com/2732731731738736/A-Tale-of-Two-Colonies-What-Really-Happened-in-Virginia-and-Bermuda-by-Virginia-Bernhard.pdf
    • http://cefasfese.4pu.com/9731735739738/Her-Stories-African-American-Folktales-Fairy-Tales-and-True-

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