Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7863d3dfc255d8e…

MALICIOUS

PDF

14.7 KB Created: 2019-04-30 04:01:59 +01:00 Authoring application: mPDF 5.7
MD5: e523b6806a6c548528bc66c9000f76c4 SHA-1: c6625feeed02a976f03aa60160d9c2612bdb3069 SHA-256: a7863d3dfc255d8eb71c981a25606183fde54dbae244f396051dcff688f578ff
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs, forming a link farm. The primary heuristic indicates this is a PDF SEO link farm, suggesting a tactic to drive traffic to external resources. While the specific intent of the linked PDFs is unclear, the sheer volume and the ML classifier's high confidence score point towards malicious intent, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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/3092090099094094/Good-Luck-Ivy-by-Lisa-Yee.pdf
    • http://loaminoo.linkpc.net/9092098099092/The-Good-Luck-Cat-by-Joy-Harjo.pdf
    • http://loaminoo.linkpc.net/4099097095096094/The-Good-Luck-of-Right-Now-by-Matthew-Quick.pdf
    • http://loaminoo.linkpc.net/6099099092094096/The-Good-Luck-of-Right-Now-by-Matthew-Quick.pdf
    • http://loaminoo.linkpc.net/9098098095093/The-Good-Luck-of-Right-Now-by-Matthew-Quick.pdf
    • http://loaminoo.linkpc.net/4098098093096/Good-Luck-in-Cracked-Italian-by-Richard-Hugo.pdf
    • http://loaminoo.linkpc.net/1091099097096092090/I-Car-Professional-Automotive-Collision-Repair-by-James-E-Duffy.pdf
    • http://loaminoo.linkpc.net/4094099090093097/Sand-of-the-Arena-Gladiators-of-the-Empire-1-by-James-Duffy.pdf
    • http://loaminoo.linkpc.net/6095095099094/Good-Luck-Creating-the-Conditions-for-Success-in-Life-and-Business-by-lex-Rovira-Celma.pdf
    • http://loaminoo.linkpc.net/6094092091090097/Good-to-Great-and-the-Social-Sectors-A-Monograph-to-Accompany-Good-to-Great-by-James-C-Collins.pdf
    • http://loaminoo.linkpc.net/4094090094091091/More-Than-Just-Luck-The-Luck-Series-Book-4-by-Jaclyn-Weist.pdf
    • http://loaminoo.linkpc.net/4097096094096/Luck-Is-Luck-Poems-by-Lucia-Perillo.pdf
    • http://loaminoo.linkpc.net/2093096093099093/Luck-and-Faith-Luck-2-by-Ashley-Poch.pdf
    • http://loaminoo.linkpc.net/1099098093094090/Luck-of-Love-Luck-1-by-Ashley-Poch.pdf
    • http://loaminoo.linkpc.net/8097099092096096/Writing-for-Children-Pamela-Cleaver-by-Pamela-Cleaver.pdf
    • http://loaminoo.linkpc.net/1092097090095/The-Bad-Luck-Wedding-Dress-Bad-Luck-Wedding-1-by-Geralyn-Dawson.pdf
    • http://loaminoo.linkpc.net/4090096093098098/The-Last-Good-Kiss-by-James-Crumley.pdf
    • http://loaminoo.linkpc.net/1095095098093092/The-Good-and-the-Ghastly-A-Novel-by-James-Boice.pdf
    • http://loaminoo.linkpc.net/2090098097092099/The-Good-Lord-Bird-by-James-McBride.pdf
    • http://loaminoo.linkpc.net/4095093095096095/The-Good-Lord-Bird-by-James-McBride.pdf
    • http://loaminoo.linkpc.net/4094090094091091/More-Than-Just-Luck-The-Luck-Series-Book-4-by-Jaclyn-W

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