Malicious PDF — malware analysis report

Static analysis result for SHA-256 9926f707fc420d40…

MALICIOUS

PDF

16.3 KB Created: 2019-05-02 07:30:46 +01:00 Authoring application: mPDF 5.7
MD5: c1b8366d244aa4d8d2eef9e6cbafc05a SHA-1: 1323782636ba92d5dc107d799f3db142cf5a6607 SHA-256: 9926f707fc420d40122757b18a997123cd62da36b828bea9c10f522964c6116a
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, characteristic of SEO poisoning or link farm techniques. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search results or redirect users to potentially harmful content. The primary attack pattern involves leveraging a link farm within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/9091092094092/Spaceland-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/9093092094091093/Turing-amp-Burroughs-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/9091091093095/The-Hacker-and-the-Ants-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/1090095090092094097/Wetware-Roman-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/9093092092097090/The-Hollow-Earth-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/9093092093094099/Mind-Tools-The-Five-Levels-of-Mathematical-Reality-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/5093092096092097/The-Fourth-Dimension-A-Guided-Tour-of-the-Higher-Universes-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/1090092095093099092/-lt-lt-Die-gt-gt-Wunderwelt-Der-Vierten-Dimension-Ein-Kursbuch-F-r-Reisen-In-Die-H-here-Wirklichkeit-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/9093092092097098/The-Lifebox-the-Seashell-and-the-Soul-What-Gnarly-Computation-Taught-Me-About-Ultimate-Reality-the-Meaning-of-Life-and-How-to-Be-Happy-by-Rudy-Rucker.pdf
    • http://loaminoo.linkpc.net/9093092094091092/Shoot-for-the-Moon-Lessons-on-Life-from-a-Dog-Named-Rudy-Tao-of-Rudy-2-by-Corinne-Humphrey.pdf
    • http://loaminoo.linkpc.net/1094090091090091/White-Light-by-Campbell-Armstrong.pdf
    • http://loaminoo.linkpc.net/6096093096093093/How-to-Draw-What-You-See-by-Rudy-De-Reyna.pdf
    • http://loaminoo.linkpc.net/9093092092096098/Footloose-by-Rudy-Josephs.pdf
    • http://loaminoo.linkpc.net/9093092094091094/The-Marine-by-Rudy-Josephs.pdf
    • http://loaminoo.linkpc.net/2093095099093097/The-Temptations-of-Big-Bear-by-Rudy-Wiebe.pdf
    • http://loaminoo.linkpc.net/9093092093094097/Peace-Shall-Destroy-Many-by-Rudy-Wiebe.pdf
    • http://loaminoo.linkpc.net/5098091095098098/Rudy-the-Reindeer-by-Sylviane-Gangloff.pdf
    • http://loaminoo.linkpc.net/9093092091099096/Rudy-s-New-Human-by-Roxanna-Elden.pdf
    • http://loaminoo.linkpc.net/1099098099099/Long-Division-by-Rudy-Kikel.pdf
    • http://loaminoo.linkpc.net/5095097093099/A-Discovery-Of-Strangers-by-Rudy-Wiebe.pdf
    • http://loaminoo.linkpc.net/9093092092097098/The-Lifebox-the-Seashell-and-the-Soul-What-Gna

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