Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ae923ca1dae4b3…

MALICIOUS

PDF

16.6 KB Created: 2019-11-28 22:38:12 +00:00 Authoring application: mPDF 5.7
MD5: b084c38a079f3372afde5084355dd709 SHA-1: a75eab97fb95d0406e2e6de5604161faa6c1eb2a SHA-256: d4ae923ca1dae4b361b408464331d50fcc90a004a290110c39ee02e2854062ba
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a malicious intent to distribute content or abuse search engine optimization. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the sheer volume of links points towards a delivery mechanism for further malicious activity, potentially leading to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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/1735730730731735/Once-Once-1-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/4730730738739/Once-Once-1-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/3735737734735730/Then-Once-2-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/3731739737738/Now-Once-3-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/1739732733733737/Once-Once-1-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/3731738735735/After-Once-4-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/2735737734735731/Puppy-Fat-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/4736735733734/Boy-Overboard-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/8739731739738737/Too-Small-to-Fail-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/3739739739738733/Girl-Underground-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/2732736730731731/Blabber-Mouth-Rowena-Batts-1-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/4738737734739732/Blabber-Mouth-Blabber-Mouth-1-by-Morris-Gleitzman.pdf
    • http://cefasfese.4pu.com/7732735734738730/Diary-and-Letters-of-Gouverneur-Morris-Volume-2-by-Anne-Cary-Morris.pdf
    • http://cefasfese.4pu.com/7732735734737737/Diary-and-Letters-of-Gouverneur-Morris-Volume-1-by-Anne-Cary-Morris.pdf
    • http://cefasfese.4pu.com/4734736730732732/Outpassage-by-Jante-Morris-Chris-Morris.pdf
    • http://cefasfese.4pu.com/6736731731732739/News-from-Nowhere-or-an-Epoch-of-Rest-Being-Some-Chapters-from-a-Utopian-Romance-1890-by-William-Morris-by-William-Morris.pdf
    • http://cefasfese.4pu.com/7732735734738737/The-Diary-and-Letters-of-Gouverneur-Morris-Minister-of-the-United-States-to-France-Volume-2-by-Gouverneur-Morris.pdf
    • http://cefasfese.4pu.com/1732731732731737/Morris-As-Elvis-The-World-s-Greatest-Elvis-Impersonator-by-Morris-Bates.pdf
    • http://cefasfese.4pu.com/5739736734737733/Edmund-Morris-s-Theodore-Roosevelt-Trilogy-Bundle-The-Rise-of-Theodore-Roosevelt-Theodore-Rex-and-Colonel-Roosevelt-by-Edmund-Morris.pdf
    • http://cefasfese.4pu.com/1735736730739739/A-Man-and-His-God-by-Janet-E-Morris.pdf

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