Malicious PDF — malware analysis report

Static analysis result for SHA-256 b259e9991b224f15…

MALICIOUS

PDF

14.0 KB Created: 2019-05-05 08:31:34 +01:00 Authoring application: mPDF 5.7
MD5: d2739756c293d3b18b528ab8edcff242 SHA-1: 7110fc97cb811fe1c1db8bcaaaf4fa5ceae615f0 SHA-256: b259e9991b224f15198d2f1eb158a8ea126750120da425abd4077ee129b5220b
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to direct users to external resources. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious purposes, likely to distribute further payloads or engage in phishing.

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/3094099090095094/A-Buccaneer-at-Heart-The-Adventurers-Quartet-2-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/7097099090096/All-About-Passion-Cynster-7-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1091096096092098/Hero-Come-Back-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/4093096090097099/All-About-Passion-Cynster-7-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/7099097095091/A-Rake-s-Vow-Cynster-2-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/3093093095093099/Four-In-Hand-Regency-2-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093094098093096/Four-In-Hand-Regencies-2-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093099091094091/All-About-Love-Cynster-6-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/3098096094091091/The-Truth-About-Love-Cynster-12-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093095092095095/A-Lady-of-His-Own-Bastion-Club-3-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093095091094093/Beyond-Seduction-Bastion-Club-6-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093095095099092/The-Ideal-Bride-Cynster-11-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093094096097094/The-Truth-About-Love-Cynster-12-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/2099091091090097/Rules-of-Engagement-An-Anthology-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/7098095093097/A-Secret-Love-Cynster-5-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1094097097094096/On-a-Wild-Night-Bar-Cynster-8-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/3092095091093093/Devil-s-Bride-Cynster-1-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1091090094096097095/Nur-In-Deinen-Armen-Die-Cynster-Familie-6-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/1093095092099091/A-Gentleman-s-Honor-Bastion-Club-2-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/2099090095092098/The-Lady-Chosen-amp-A-Gentleman-s-Honor-2-In-1-by-Stephanie-Laurens.pdf
    • http://loaminoo.linkpc.net/10930950910

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