Malicious PDF — malware analysis report

Static analysis result for SHA-256 889527b669fec7d3…

MALICIOUS

PDF

13.6 KB Created: 2019-04-29 23:07:16 +01:00 Authoring application: mPDF 5.7
MD5: af38c285799043ec1281b3eeb883ffd4 SHA-1: 15d566a5800c54a02cba69102d89e869f9a53b64 SHA-256: 889527b669fec7d33cbbdda8fe794b9860507595e68fa2804c1ed9b53460b70a
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, hosted on a dynamic DNS domain. This technique is often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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://loaminoo.linkpc.net/7092094090093094/The-Essential-Clive-Barker-Selected-Fiction-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/7092094090092092/Incarnations-Three-Plays-by-Clive-Barker-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/1097096095097095/Clive-Barker-s-Hellraiser-Vol-1-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/5098095096092/Imajica-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/3095098096095092/Sacrament-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/2095090095098092/Sacrament-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/2096093095092/Cabal-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/3092099099091/Imajica-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/6097092099098091/Infernal-Parade-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/2095098092097093/The-Hellbound-Heart-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/6093098097090095/Lord-of-Illusions-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/2096093099099/The-Damnation-Game-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/4098094093095097/Clive-Barker-s-Hellraiser-Collected-Best-I-by-D-G-Chichester.pdf
    • http://loaminoo.linkpc.net/2091092092091098/Absolute-Midnight-Abarat-3-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/2091095098094090/The-Inhuman-Condition-Books-of-Blood-4-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/3097095094093/Days-of-Magic-Nights-of-War-Abarat-2-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/7092094090092090/Clive-Barker-s-The-Great-And-Secret-Show-Volume-2-by-Chris-Ryall.pdf
    • http://loaminoo.linkpc.net/7093092096090/The-Complete-Clive-Barker-s-The-Great-And-Secret-Show-by-Chris-Ryall.pdf
    • http://loaminoo.linkpc.net/3093097096094098/Abarat-Days-of-Magic-Nights-of-War-Abarat-2-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/2095099093096/Books-of-Blood-Volume-One-Books-of-Blood-1-by-Clive-Barker.pdf
    • http://loaminoo.linkpc.net/4098094093095097/Clive-Barker-s-Hellraiser-Collected-Best-I-by-D-G-Chic

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