Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1ed25de3a4cc69…

MALICIOUS

PDF

13.5 KB Created: 2020-03-18 21:12:20 +00:00 Authoring application: mPDF 5.7
MD5: d24757526c43157a89c9a8de826b4233 SHA-1: ae8d4c330874b9edfdaf88fd98d4a1724d0272e8 SHA-256: 4b1ed25de3a4cc699044d16e4f64832130b81c095cb792dfef1b8a505bc84195
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or redirection attack. The ML classifier also flagged the document as malicious with high confidence. The embedded URLs are likely intended to direct users to malicious websites or to manipulate search engine rankings.

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/9870870872874876/The-Boy-Allies-with-Haig-in-Flanders-by-Clair-W-Hayes.pdf
    • http://kitasdyu.myhome.cx/1873878870871873/Allies-amp-Assassins-Allies-amp-Assassins-1-by-Justin-Somper.pdf
    • http://kitasdyu.myhome.cx/1871879873877873872/Invisible-Allies-by-Aleksandr-Solzhenitsyn.pdf
    • http://kitasdyu.myhome.cx/1871871873876875/Enemies-amp-Allies-by-Kevin-J-Anderson.pdf
    • http://kitasdyu.myhome.cx/9871874871873/A-Dog-of-Flanders-by-Ouida.pdf
    • http://kitasdyu.myhome.cx/2873872877874872/Allies-Love-Tips-by-Allie-Wilder.pdf
    • http://kitasdyu.myhome.cx/2875871876875871/Dangerous-Allies-WWII-1-by-Renee-Ryan.pdf
    • http://kitasdyu.myhome.cx/9871874877877/Best-Of-Friends-by-Rebecca-Flanders.pdf
    • http://kitasdyu.myhome.cx/2876872879873872/Polar-Day-by-Julie-Flanders.pdf
    • http://kitasdyu.myhome.cx/2878870871871879/Flanders-by-Patricia-Anthony.pdf
    • http://kitasdyu.myhome.cx/2873875870877870/The-Allies-American-Family-Portrait-6-by-Jack-Cavanaugh.pdf
    • http://kitasdyu.myhome.cx/9875875873878871/The-Unlikely-Allies-1939-House-of-Winslow-36-by-Gilbert-Morris.pdf
    • http://kitasdyu.myhome.cx/7877875870873877/Adversaries-into-Allies-Win-People-Over-Without-Manipulation-or-Coercion-by-Bob-Burg.pdf
    • http://kitasdyu.myhome.cx/1879873875874872/Spider-Girl-Volume-3-Avenging-Allies-by-Tom-DeFalco.pdf
    • http://kitasdyu.myhome.cx/7874871874874/In-Flanders-Fields-by-Norman-Jorgensen.pdf
    • http://kitasdyu.myhome.cx/2879876870870876/The-Flanders-Road-by-Claude-Simon.pdf
    • http://kitasdyu.myhome.cx/7875876877875874/Moll-Flanders-by-Daniel-Defoe.pdf
    • http://kitasdyu.myhome.cx/4871875871876877/Polar-Night-by-Julie-Flanders.pdf
    • http://kitasdyu.myhome.cx/5872870879874877/The-Students-Of-Snow-by-Jane-Flanders.pdf
    • http://kitasdyu.myhome.cx/4878874871871874/Moll-Flanders-by-Daniel-Defoe.pdf
    • http://kitasdyu.myhome.cx/9875875873878871/The-Unli

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