Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d420d4cb6a0fc1…

MALICIOUS

PDF

53.8 KB Authoring application: LibreOffice
MD5: 1f2e9dfa06c154c4d93a6cc67f8cb2c0 SHA-1: 1a190ef2355e9cda45b2d05f39a0412179783b72 SHA-256: 26d420d4cb6a0fc14ddd146f3cb4d79f6b15a44b8c1f6dd59c54b9e3e24c4d06
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external PDF links, with the dominant host being moosemanormi.com. The document body also contains numerous URLs, suggesting a phishing or redirection campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://moosemanormi.com/uploads/1/3/0/7/130776003/473090ffd4d3.pdf
    • http://mjrblogspot.com/uploads/1/3/0/3/130313345/5308871.pdf
    • http://fare.stroimontag123.ru/uploads/2020/01/29/1087258.pdf
    • http://xun.tikko.ru/uploads/2020/01/28/3154387.pdf
    • http://olmiks.pl/uploads/1/3/0/6/130621156/wujufemeka.pdf
    • http://nvarealestateresource.com/uploads/1/3/0/3/130379307/nobuvolikavu.pdf
    • http://canberrabirthservices.com/uploads/1/3/0/3/130324072/mavozuvo.pdf
    • http://miguelvaldiviezo.com/uploads/1/3/0/7/130739522/banatuz.pdf
    • http://adkstrings.com/uploads/1/3/0/5/130552017/8328237.pdf
    • http://rhemaafrica.net/uploads/1/3/0/3/130323559/2516269.pdf
    • http://nevadateach.com/uploads/1/3/0/6/130604620/dumogebipun_jefosizafed_pekadubope_pufikekobawag.pdf
    • http://studio1999.shop/uploads/1/3/0/5/130590399/finid.pdf
    • http://tcsonline.net/uploads/1/3/0/7/130776745/130776745.html#gestalt+character+sheet+pathfinder

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000138c.bin
8b4bdde446b7243e7b7487122c04e26295f411ba3a1b2a5215303f792e29a0d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138C 8264 bytes

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