Malicious PDF — malware analysis report

Static analysis result for SHA-256 8474d79a8aa0fe3c…

MALICIOUS

PDF

16.7 KB Created: 2020-03-13 23:10:47 +00:00 Authoring application: mPDF 5.7 First seen: 2021-06-04
MD5: baf4e57c3f6a052fe69ab43a5b1c9e14 SHA-1: e69044a26cd09b06966273b7d2ec08a7646c00e1 SHA-256: 8474d79a8aa0fe3cf77a652dfbc3caef240bef091a449ecb44da1850b831ad19
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files on a suspicious domain, identified as a link farm. This technique is often used for SEO poisoning or to distribute further malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://ieuicufioao.myhome.cx/3555551557555552/The-Craving-The-Vampire-Diaries-Stefan-s-Diaries-3-by-L-J-Smith.pdf In PDF document text
    • http://ieuicufioao.myhome.cx/9550553552557555/The-Vampire-Diaries---Stefan-s-Diaries---Rache-ist-nicht-The-Vampire-Diaries-3-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/8558550551550552/The-Vampire-Diaries---Stefan-s-Diaries---Fluch-der-Finsternis-Band-6-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4557552553555/The-Ripper-The-Vampire-Diaries-Stefan-s-Diaries-4-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4557552553557/The-Asylum-The-Vampire-Diaries-Stefan-s-Diaries-5-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/3556555551550/Bloodlust-The-Vampire-Diaries-Stefan-s-Diaries-2-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/2557552552552559/The-Struggle-The-Vampire-Diaries-2-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1559553559559551/The-Struggle-The-Vampire-Diaries-2-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/2557552551559557/Dark-Reunion-The-Vampire-Diaries-4-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/3554550555557551/Nightfall-The-Vampire-Diaries-The-Return-1-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4553559555557553/The-Fury-and-Dark-Reunion-The-Vampire-Diaries-3-4-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4554552555559/Destiny-Rising-The-Vampire-Diaries-The-Hunters-3-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4550557551557550/Shadow-Souls-The-Vampire-Diaries-The-Return-2-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/7554558555556555/Tumbleweeds-The-Vampire-Diaries-The-Return-Extras-2-1-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/3554550555557556/Shadow-Souls-The-Vampire-Diaries-The-Return-2-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1551552555557550551/Matt-and-Elena-Tenth-Date-On-Wickery-Pond-The-Vampire-Diaries-Extras-0-2-by-L-J-Smith.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/8553550554552554/Latin-America-Diaries-The-Sequel-to-The-Motorcycle-Diaries-by-Ernesto-Che-Guevara.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4557559551557557/Breaking-Free-The-Vampire-Diaries-Revelations-1-by-L-Maci.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/4554557559554552/The-Helsing-Diaries-Vampire-High-School-2-by-Ian-Hall.pdfIn PDF document text
    • http://ieuicufioao.myhome.cx/1559558553559559/The-Sparkly-Vampire--Obsessed-Diaries-by-Lauren-Fobbs.pdfIn PDF document text

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