Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72389372a73a77a…

MALICIOUS

PDF

19.1 KB Created: 2019-04-30 03:53:00 +01:00 Authoring application: mPDF 5.7
MD5: 9f2cf11360b3a04f6a87a3bc78f2bd02 SHA-1: a917a3a1319803308bed505a51135cae2c0e256a SHA-256: e72389372a73a77aa96229d1f50262a5d9dcd7ab89bf0cc9045556af65106fbd
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to direct users to external resources, potentially for malicious purposes such as SEO spam or malware distribution. The primary IOCs are the domain and paths of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/3092099097099096/Multiple-Intelligences-New-Horizons-in-Theory-and-Practice-by-Howard-Gardner.pdf
    • http://loaminoo.linkpc.net/6091093096095095/Intelligence-Reframed-Multiple-Intelligences-for-the-21st-Century-by-Howard-Gardner.pdf
    • http://loaminoo.linkpc.net/1090093090098095094/SOFSEM-2004-Theory-and-Practice-of-Computer-Science-30th-Conference-on-Current-Trends-in-Theory-and-Practice-of-Computer-Science-Merin-Czech-Republic-2004-Lecture-Notes-in-Computer-Science-by-Peter-Van-Emde-Boas.pdf
    • http://loaminoo.linkpc.net/8090091098092090/Theory-and-Practice-of-Managed-Competition-in-Health-Care-Finance-Lectures-in-Economics-Theory-Institutions-Policy-by-Alain-C-Enthoven.pdf
    • http://loaminoo.linkpc.net/2093098090092097/Curing-MS-How-Science-Is-Solving-the-Mysteries-of-Multiple-Sclerosis-by-Howard-L-Weiner.pdf
    • http://loaminoo.linkpc.net/8093097093090092/Harmony-Its-No-and-Practice-Its-Theory-Ts-Theory-by-Ebenezer-Prout-B-Prout.pdf
    • http://loaminoo.linkpc.net/8095094097092097/Good-Work-When-Excellence-and-Ethics-Meet-by-Howard-Gardner.pdf
    • http://loaminoo.linkpc.net/1090090096095096098/Theory-amp-Practice-in-Listening-by-Dunkel.pdf
    • http://loaminoo.linkpc.net/9094090092093/Theory-and-practice-of-hell-by-Eugen-Kogon.pdf
    • http://loaminoo.linkpc.net/5096098091092093/The-Practice-and-Theory-of-Bolshevism-by-Bertrand-Russell.pdf
    • http://loaminoo.linkpc.net/8095090094098097/The-Theory-and-Practice-of-Socialism-by-John-Strachey.pdf
    • http://loaminoo.linkpc.net/3091098096091097/Magick-in-Theory-and-Practice-by-Aleister-Crowley.pdf
    • http://loaminoo.linkpc.net/9098090090091094/Theory-and-Practice-of-Seamanship-XI-by-Graham-Danton.pdf
    • http://loaminoo.linkpc.net/1091091096090097098/Successful-Funeral-Service-Practice-by-Howard-C-Raether.pdf
    • http://loaminoo.linkpc.net/8094096090093098/Theory-and-Practice-of-the-Philosopher-s-Stone-by-Nicholas-Flamel.pdf
    • http://loaminoo.linkpc.net/7096096099095097/Network-Coding-From-Theory-to-Practice-by-Muriel-Medard.pdf
    • http://loaminoo.linkpc.net/2096091092096092/Feminist-Practice-and-Poststructuralist-Theory-by-Chris-Weedon.pdf
    • http://loaminoo.linkpc.net/1091095099095094097/Psychodynamic-Psychiatry-Theory-amp-Practice-1-by-John-Frosch.pdf
    • http://loaminoo.linkpc.net/1091098097092099094/Central-Banking-in-Theory-and-Practice-by-Alan-S-Blinder.pdf
    • http://loaminoo.linkpc.net/1090094090094095098/Random-Vibrations-Theory-and-Practice-by-Paul-H-Wirsching.pdf