Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b321c1d6b701523…

MALICIOUS

PDF

17.2 KB Created: 2019-05-02 06:20:42 +01:00 Authoring application: mPDF 5.7
MD5: f9be4f80ecd73e46df00bebac74acf62 SHA-1: 0c281cd4937ab2c7ecb6ed8a49315866aa4e17ad SHA-256: 2b321c1d6b701523e1c04a7a0657b422f746922524d7cd9aa0bf2d6d548d8932
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to a single domain, indicating a link farm or redirection scheme. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves directing users to external content, likely for SEO manipulation or to host further malicious payloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/1731731739737733730/the-way-none-of-this-happened-by-Mike-Breiner.pdf
    • http://cefasfese.4pu.com/1731731739737732732/Leben-und-Arbeiten-in-der-Schweiz-Trauminsel-in-Europa-by-Rolf-Breiner.pdf
    • http://cefasfese.4pu.com/1731731739737731738/Black-Yeats-Eric-Roach-and-the-Politics-of-Caribbean-Poetry-by-Laurence-A-Breiner.pdf
    • http://cefasfese.4pu.com/5732735737732733/Harry-Potter-and-the-Chamber-of-Secrets---Harry-Potter-dan-Kamar-Rahasia-Harry-Potter-2-by-J-K-Rowling.pdf
    • http://cefasfese.4pu.com/2733733731736735/Bike-Boy-by-Zack.pdf
    • http://cefasfese.4pu.com/5737737734739/Uncle-Harry-s-Stories-Looking-Back-Blackly-and-Proudly-Growing-Up-in-America-by-Harry-R-Irving.pdf
    • http://cefasfese.4pu.com/4736730735731731/Harry-s-Last-Stand-How-the-World-My-Generation-Built-is-Falling-Down-and-What-We-Can-Do-to-Save-It-by-Harry-Leslie-Smith.pdf
    • http://cefasfese.4pu.com/3731731732737733/One-Man-and-His-Bike-by-Mike-Carter.pdf
    • http://cefasfese.4pu.com/9732733738738/I-d-Rather-Be-Riding-My-Bike-by-Eric-Pinder.pdf
    • http://cefasfese.4pu.com/3731732737732730/The-Broomstick-Bike-by-Veronica-Bennett.pdf
    • http://cefasfese.4pu.com/2738734731734730/Stationary-Bike-by-Stephen-King.pdf
    • http://cefasfese.4pu.com/1737736730739/The-Kurdish-Bike-by-Alesa-Lightbourne.pdf
    • http://cefasfese.4pu.com/2735735735739733/The-Bike-Lesson-by-Stan-Berenstain.pdf
    • http://cefasfese.4pu.com/1736732735730739/Bump-Bike-amp-Baby-by-Moire-O-39-Sullivan.pdf
    • http://cefasfese.4pu.com/1732739731730734/Francesca-and-the-Magic-Bike-by-Cynthia-Nugent.pdf
    • http://cefasfese.4pu.com/5732731737733738/Getting-Out-of-Town-by-Book-amp-Bike-by-Kent-Thompson.pdf
    • http://cefasfese.4pu.com/2730736730733735/Like-Riding-a-Bike-Ken-amp-Michael-1-by-Eug-ne-Thicke.pdf
    • http://cefasfese.4pu.com/6737730736738730/By-Bike-around-Bando-and-Chichibu-by-Tony-Gibb.pdf
    • http://cefasfese.4pu.com/1730732738739737734/7-Secrets-to-Success-I-Learned-From-My-bike-by-Katie-Schmatz.pdf
    • http://cefasfese.4pu.com/9737734733735730/Basic-Illustrated-Bike-Touring-and-Bikepacking-by-Justin-Lichter.pdf
    • http://cefasfese.4pu.com/4736730735731731/Harry-s-Last-Stand-How-the-World-My-Generation-Built-is-Falling-Down-and-What-We-Can-Do-to-Save-It-by-Harry-Leslie-

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