Malicious PDF — malware analysis report

Static analysis result for SHA-256 10aad7d58c757600…

MALICIOUS

PDF

144.3 KB Created: 2021-03-14 16:14:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb9bf6463a59eb36e84d881a75a0573 SHA-1: 6f16408fe8e3d5168ac7dda841f76a6157d5905b SHA-256: 10aad7d58c75760019c62b5bc6cac9e3f2f4613fa3a18c56ecfd978da5cc046b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and it contains numerous external links, many pointing to PDF files hosted on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to create a link farm or distribute malicious content. The presence of embedded URLs further supports this. While no scripts were explicitly extracted, the nature of the heuristics and the numerous URLs strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 4

  • 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.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://pelibifir.ru/award?keyword=calisto+y+melibea+pdf
    • http://filanion.online/bodarujorufazelobixudadq861.pdf
    • http://kind-insta.site/31000630530j452u.pdf
    • https://faruroju.weebly.com/uploads/1/3/5/9/135986438/referojofiwawojizuru.pdf
    • https://fidimamafiw.weebly.com/uploads/1/3/4/6/134624465/pebapot_milofok.pdf
    • https://sipitajopidegol.weebly.com/uploads/1/3/1/4/131453448/7646700.pdf
    • https://cdn-cms.f-static.net/uploads/4477620/normal_601a040b32196.pdf
    • https://patosalar.weebly.com/uploads/1/3/1/3/131384166/ac74c67c662.pdf
    • http://maewallace.com/vonusid3b9m.pdf
    • http://setomomenoku.22web.org/erode_weather_report_today.pdf
    • https://mofomajem.weebly.com/uploads/1/3/4/3/134349017/pejulelogekebev.pdf
    • https://xegazoniwenopuk.weebly.com/uploads/1/3/6/0/136011370/d14024.pdf
    • https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/zogimoratifukifo.pdf
    • https://cdn-cms.f-static.net/uploads/4377114/normal_6036d84384051.pdf
    • http://lolkek.xyz/82165065244eainz.pdf
    • https://static.s123-cdn-static.com/uploads/4490121/normal_5fdd5ffef021b.pdf
    • https://cdn-cms.f-static.net/uploads/4375503/normal_604ae93b7c143.pdf
    • https://cdn-cms.f-static.net/uploads/4475212/normal_6023a2cfaabef.pdf
    • http://bileperiwuxi.epizy.com/35276729664.pdf
    • https://s3.amazonaws.com/zifilobesumafi/what_can_you_put_in_a_spinach_smoothie.pdf
    • https://s3.amazonaws.com/lopadivupudexa/81695377802.pdf
    • https://s3.amazonaws.com/dinisemowoge/47883315278.pdf

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