Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a79d9aea429833…

MALICIOUS

PDF

17.1 KB Created: 2019-05-02 17:18:26 +01:00 Authoring application: mPDF 5.7
MD5: c0e92bcde0a6918bd2fa711e9bff3f93 SHA-1: 7ecc7ffffb74dfabdd4f10074c63ba6771736049 SHA-256: e9a79d9aea429833159dde23bb0e6078b374ba97c369a9bb0f7c84f9792ded3a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the URLs themselves are currently marked as benign, the sheer volume and the nature of the heuristic firing suggest a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

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://loaminoo.linkpc.net/1094095091094094/Zandor-Men-of-Steel-3-by-M-J-Fields.pdf
    • http://loaminoo.linkpc.net/4095094096091094/Zandor-Men-of-Steel-3-by-M-J-Fields.pdf
    • http://loaminoo.linkpc.net/3097097096091094/Forever-Family-Men-of-Steel-4-5-by-M-J-Fields.pdf
    • http://loaminoo.linkpc.net/1094095092098095/Jase-and-Carly-Summer-Lovin-Men-of-Steel-1-5-by-M-J-Fields.pdf
    • http://loaminoo.linkpc.net/4093092094097096/Kitchener-s-Lost-Boys-From-the-Playing-Fields-to-the-Killing-Fields-by-John-Oakes.pdf
    • http://loaminoo.linkpc.net/2097090098099097/Softer-Than-Steel-Love-amp-Steel-2-by-Jessica-Topper.pdf
    • http://loaminoo.linkpc.net/3095099098092098/Steel-Justice-Steel-Infidels-3-by-Dez-Burke.pdf
    • http://loaminoo.linkpc.net/5095093091094092/Erection-and-Inspection-of-Iron-and-Steel-Constructions-Written-for-the-Use-of-Architects-Engineers-and-Builders-and-for-Civil-Service-Candidates-for-the-Position-of-Inspector-of-Iron-and-Steel-by-L-M-Bernfeld.pdf
    • http://loaminoo.linkpc.net/4093098098093093/The-Stainless-Steel-Rat-Joins-the-Circus-Stainless-Steel-Rat-10-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/1093094091096092/Hollow-Fields-Vol-1-Hollow-Fields-1-by-Madeleine-Rosca.pdf
    • http://loaminoo.linkpc.net/6098094097098/A-Stainless-Steel-Rat-is-Born-Stainless-Steel-Rat-1-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/4093098098093095/The-Stainless-Steel-Rat-Goes-to-Hell-Stainless-Steel-Rat-9-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/2091091093095099/Wheels-of-Steel-Book-1-Wheels-of-Steel-1-by-Pepper-Pace.pdf
    • http://loaminoo.linkpc.net/4093098098093094/The-Stainless-Steel-Rat-Gets-Drafted-Stainless-Steel-Rat-2-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/3098092092092091/The-Stainless-Steel-Rat-s-Revenge-Stainless-Steel-Rat-5-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/2091091093096090/Wheels-of-Steel-Book-3-Wheels-of-Steel-3-by-Pepper-Pace.pdf
    • http://loaminoo.linkpc.net/4091091094092/The-Stainless-Steel-Rat-Stainless-Steel-Rat-4-by-Harry-Harrison.pdf
    • http://loaminoo.linkpc.net/3098093094091097/Golden-Moments-Danielle-Steel-by-Danielle-Steel.pdf
    • http://loaminoo.linkpc.net/1090098093097097/Fields-of-Elysium-Fields-of-Elysium-1-by-A-B-Whelan.pdf
    • http://loaminoo.linkpc.net/3097097099091097/The-Fields-by-Ty-Schwamberger.pdf

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