Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d7265c4d8939da…

MALICIOUS

PDF

13.6 KB Created: 2019-05-02 17:16:57 +01:00 Authoring application: mPDF 5.7
MD5: 39bf23974f12e1c1727362ddbeb37f75 SHA-1: 94be89d65b8627067f74c7ef96f1bdb4716548af SHA-256: d9d7265c4d8939daa65b2fe4a301b14190e5aa7aa3a93b212e3c66456251aa6c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common technique for SEO spam or to obscure malicious redirects. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, limiting the ability to determine a specific payload or further attack steps. The primary IOCs are the numerous URLs pointing to the 'loaminoo.linkpc.net' domain.

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/2096090092094093/Double-Take-FBI-Thriller-11-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/1092096095094098/Split-Second-FBI-Thriller-15-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/6090092098091096/Hemlock-Bay-FBI-Thriller-6-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/1093090099/Nemesis-FBI-Thriller-19-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/6093098090095/The-Cove-FBI-Thriller-1-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/3091099095093093/Blow-Out-FBI-Thriller-9-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/6093097095092098/Blind-Side-FBI-Thriller-8-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/2094099094093095/Power-Play-FBI-Thriller-18-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/1099099095094099/Eleventh-Hour-FBI-Thriller-7-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/2093091092097094/Tail-Spin-FBI-Thriller-12-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/7095091093094099/Catherine-Coulter-The-Star-Series-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/2099096092097097/Beyond-Eden-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/3096095099097094/Season-of-the-Sun-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/7095091092094098/Born-to-Be-Wild-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/4090090094098099/The-Heir-Regency-3-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/7091098097090092/The-Deception-Baron-3-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/2097094097093091/The-Final-Cut-A-Brit-in-the-FBI-1-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/2090091099091092/Lyon-s-Gate-Brides-9-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/1092090095097094/Lord-Harry-Regency-5-by-Catherine-Coulter.pdf
    • http://loaminoo.linkpc.net/7095091092096099/Prince-of-Ravenscar-Brides-11-by-Catherine-Coulter.pdf

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