Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d41ab753a85401…

MALICIOUS

PDF

23.1 KB Created: 2019-05-02 17:14:42 +01:00 Authoring application: mPDF 5.7
MD5: 3c325c473c01d1561cec9839c793d3b7 SHA-1: 9aaf5045ab1c69ffe35ec92aded02f42b50921a9 SHA-256: 72d41ab753a854019e96aaff649cb8f1a2acf3c6f910451632b76548c26517df
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, which are presented as book titles. While the ML classifier strongly indicates maliciousness, the primary attack pattern observed is the distribution of these links, likely leading to spam or phishing content. No scripts were extracted, but the embedded URLs are the main indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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/1090095096093097093/Electronic-Commerce-Security-Risk-Management-And-Control-by-Marilyn-Greenstein.pdf
    • http://loaminoo.linkpc.net/1091098092091095097/Icc-Banking-Commission-Collected-Opinions-1995-2001-On-Ucp-500-Ucp-400-Urc-522-amp-Urdg-458-by-International-Chamber-of-Commerce.pdf
    • http://loaminoo.linkpc.net/6095091095094090/International-Encyclopedia-of-Technical-Analysis-by-Joel-G-Siegel.pdf
    • http://loaminoo.linkpc.net/6095091095093095/Information-System-Management-Handbook-by-Joel-G-Siegel.pdf
    • http://loaminoo.linkpc.net/6095091095093093/The-International-Handbook-of-Computer-Security-by-Jae-K-Shim.pdf
    • http://loaminoo.linkpc.net/7096093099092094/The-Oxford-Handbook-of-the-History-of-International-Law-by-Bardo-Fassbender.pdf
    • http://loaminoo.linkpc.net/7096095095099096/Research-Handbook-on-Sovereign-Wealth-Funds-and-International-Investment-Law-by-Fabio-Bassan.pdf
    • http://loaminoo.linkpc.net/3096090094097091/The-Anatomy-Lesson-by-Nina-Siegal.pdf
    • http://loaminoo.linkpc.net/1090099095092091097/International-Handbook-of-Digital-Game-Studies-Computer-Games-Players-Game-Cultures-by-Johannes-Fromme.pdf
    • http://loaminoo.linkpc.net/3091097093096090/The-Cornell-Book-of-Cats-The-Comprehensive-and-Authoritative-Medical-Reference-for-Every-Cat-and-Kitten-by-Mordecai-Siegal.pdf
    • http://loaminoo.linkpc.net/6096090092092092/Joel-Osteen-Joel-Osteen-Lessons-Of-Leadership-And-Success-by-Jillian-Hall.pdf
    • http://loaminoo.linkpc.net/1091097093098094090/Perspectives-in-Psychopharmacotherapy-International-Symposium-of-Org-Who-amp-Menarini-International-Foundation-by-F-Vartanian.pdf
    • http://loaminoo.linkpc.net/5090099091098/Joel-Whitburn-s-Top-Pop-Singles-1955-2010-by-Joel-Whitburn.pdf
    • http://loaminoo.linkpc.net/3095092092094092/Thanks-for-the-Money-How-to-Use-My-Life-Story-to-Become-the-Best-Joel-McHale-You-Can-Be-by-Joel-McHale.pdf
    • http://loaminoo.linkpc.net/7090099097092097/Covenant-Discipleship-Parents-Handbook-The-Handbook-for-a-New-Sort-of-Communicants-Class-by-Richard-L-Burguet.pdf
    • http://loaminoo.linkpc.net/1090092095096096092/International-Dispute-Resolution-Towards-an-International-Arbitration-Culture-Towards-an-International-Arbitration-Culture-by-A-Vandenberg.pdf
    • http://loaminoo.linkpc.net/4096095097099098/International-Guy-San-Francisco-International-Guy-5-by-Audrey-Carlan.pdf
    • http://loaminoo.linkpc.net/9093095096095091/Facebook-Commerce-mitp-Business-by-Mathias-Kempowski.pdf
    • http://loaminoo.linkpc.net/2095094090090093/The-Bourgeois-Virtues-Ethics-for-an-Age-of-Commerce-by-Deirdre-N-McCloskey.pdf
    • http://loaminoo.linkpc.net/6096090092091095/Joel-Sternfeld-American-Prospects-by-Joel-Sternfeld.pdf