Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da45d1cfe0d6fb9…

MALICIOUS

PDF

14.1 KB Created: 2019-04-30 05:10:39 +01:00 Authoring application: mPDF 5.7
MD5: b7a4bbc230bc9b4e7252d328e3e91585 SHA-1: 6e48ead51b5e196162b0d931e051d6ac9b753f7a SHA-256: 5da45d1cfe0d6fb915d761f912b3f8509b194788aa0e1eb6ed72ee41d9a17512
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to book titles, suggesting a potential SEO poisoning or link farm tactic. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure itself facilitates the attack by presenting numerous clickable links.

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/2090097093098/The-Seduction-Of-Sarah-by-Cynthia-A-Clement.pdf
    • http://loaminoo.linkpc.net/1097091093096096/Sarah-s-Seduction-Men-of-August-2-by-Lora-Leigh.pdf
    • http://loaminoo.linkpc.net/7095092094091091/Who-Sent-Clement-Clement-1-by-Keith-A-Pearson.pdf
    • http://loaminoo.linkpc.net/5095096099098098/Seduction-of-Combat-Seduction-1-by-Emma-Calin.pdf
    • http://loaminoo.linkpc.net/5095096099099099/Seduction-of-Taste-Seduction-3-by-Emma-Calin.pdf
    • http://loaminoo.linkpc.net/2095092090091090/Song-of-Seduction-Seduction-1-by-Carrie-Lofty.pdf
    • http://loaminoo.linkpc.net/7095092096093097/The-Alchemists-of-Barbal-David-Clement-Davies-by-David-Clement-Davies.pdf
    • http://loaminoo.linkpc.net/1097091092098095/The-Seduction-2-The-Seduction-2-by-Roxy-Sloane.pdf
    • http://loaminoo.linkpc.net/1097098091097091/The-Seduction-4-The-Seduction-4-by-Roxy-Sloane.pdf
    • http://loaminoo.linkpc.net/3093092095092091/Seduction-Seduction-1-by-Scott-Prussing.pdf
    • http://loaminoo.linkpc.net/1097091093096092/The-Seduction-4-The-Seduction-4-by-Roxy-Sloane.pdf
    • http://loaminoo.linkpc.net/1097091093092094/The-Seduction-3-The-Seduction-3-by-Roxy-Sloane.pdf
    • http://loaminoo.linkpc.net/1098094098097093/Sweet-Seduction-Shadow-Sweet-Seduction-3-by-Nicola-Claire.pdf
    • http://loaminoo.linkpc.net/9098095093097092/Sweet-Seduction-Sayonara-Sweet-Seduction-9-by-Nicola-Claire.pdf
    • http://loaminoo.linkpc.net/8095095096098095/Sweet-Seduction-Shield-Sweet-Seduction-5-by-Nicola-Claire.pdf
    • http://loaminoo.linkpc.net/3090091092098092/Sweet-Seduction-Sacrifice-Sweet-Seduction-1-by-Nicola-Claire.pdf
    • http://loaminoo.linkpc.net/3090091092097099/Sweet-Seduction-Sabotage-Sweet-Seduction-6-by-Nicola-Claire.pdf
    • http://loaminoo.linkpc.net/8095095096098096/Sweet-Seduction-Stripped-Sweet-Seduction-7-by-Nicola-Claire.pdf
    • http://loaminoo.linkpc.net/3098092095091094/Masters-of-Seduction-Volume-2-Masters-of-Seduction-5-8-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/4096098093098093/Sweet-Seduction-Sacrifice-Sweet-Seduction-1-by-Nicola-Claire.pdf

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