Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aab024dd7eab223…

MALICIOUS

PDF

13.4 KB Created: 2020-03-19 20:58:02 +00:00 Authoring application: mPDF 5.7
MD5: 67af6c065bfb10634be843a0a39edfd8 SHA-1: 1218168282c2140c39188265aeaeee27b9a59eef SHA-256: 6aab024dd7eab2230e9931fbb0d7f2803ee37c71b90e0982ed312a0fee66f299
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs that point to what appear to be pirated books, suggesting a lure for users to download unauthorized content. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a link farm, and the ML classifier also flagged the document as malicious. The primary attack pattern involves using these links to potentially distribute further malware or engage in other malicious activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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://kitasdyu.myhome.cx/1870875878874877874/Dinah-Jefferies-3-Book-Collection-by-Dinah-Jefferies.pdf
    • http://kitasdyu.myhome.cx/1870875878872878875/Before-the-Rains-by-Dinah-Jefferies.pdf
    • http://kitasdyu.myhome.cx/1875878873876871/The-Tea-Planter-s-Wife-by-Dinah-Jefferies.pdf
    • http://kitasdyu.myhome.cx/4879875874875870/Dinah-s-Dark-Desire-Dinah-s-Desire-1-by-Mechele-Armstrong.pdf
    • http://kitasdyu.myhome.cx/9870873874871878/Amaryllis-at-the-Fair-by-John-Richard-Jefferies.pdf
    • http://kitasdyu.myhome.cx/8871876873872/Mrs-Jeffries-Sweeps-the-Chimney-Mrs-Jefferies-18-by-Emily-Brightwell.pdf
    • http://kitasdyu.myhome.cx/1877871876870/Shallow-Graves-John-Pellam-1-by-William-Jefferies.pdf
    • http://kitasdyu.myhome.cx/1870875878874877878/Dinah-s-Egg-by-Lee-Lorenz.pdf
    • http://kitasdyu.myhome.cx/1870875878873877879/Touchstone-by-Dinah-McCall.pdf
    • http://kitasdyu.myhome.cx/1870875878873877872/Dinah-by-Bruce-Cassiday.pdf
    • http://kitasdyu.myhome.cx/3870876874875873/Left-in-the-Care-of-by-Dinah-Lee-K-ng.pdf
    • http://kitasdyu.myhome.cx/1870875878873877878/Windwalker-The-Prophecy-1-by-Dinah-McCall.pdf
    • http://kitasdyu.myhome.cx/2874874876872873/The-King-s-Women-by-Dinah-Lampitt.pdf
    • http://kitasdyu.myhome.cx/1873874870877877/Flight-from-the-Eagle-by-Dinah-Dean.pdf
    • http://kitasdyu.myhome.cx/1872877871879/Jackson-Rule-by-Dinah-McCall.pdf
    • http://kitasdyu.myhome.cx/2872878879874877/Spooky-Cemeteries-by-Dinah-Williams.pdf
    • http://kitasdyu.myhome.cx/1870875878875879877/Dinah-and-Virginia-by-Priscilla-C-Hallowell.pdf
    • http://kitasdyu.myhome.cx/1873877876873/Dinah-in-Love-by-Claudia-Mills.pdf
    • http://kitasdyu.myhome.cx/1870875878874877873/Dinah-Blow-Your-Horn-by-Jack-M-Bickham.pdf
    • http://kitasdyu.myhome.cx/1870875878875878879/Someone-s-in-the-Kitchen-with-Dinah-by-Barbara-Pearson-Arau.pdf

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