Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd2a0ae8dc6c94e…

MALICIOUS

PDF

61.3 KB Created: 2021-03-01 16:43:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c6cea7be3aaf650f56b34afd41cc8f8b SHA-1: ac8a98fffcc4a44e5657bd8a3022c18b8185148f SHA-256: 5dd2a0ae8dc6c94e0002cecb00bf6a1f24aa5ba555cae0dca5f4b09b66f8813e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on potentially untrusted hosting. ClamAV detection and ML classification confirm the malicious nature of the file, suggesting it's a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9522

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=nonfiction+text+structures+graphic+organizers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475737/normal_5fdd97449bd47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371246/normal_5fe86c8ae8996.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/geiaSja/electricity_bill_check_haryana_dhbvn.pdfIn PDF document text
    • http://drilltech.info/kijakidekodibifusemabevsfp1.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/lngfgdk/sapar.pdfIn PDF document text
    • http://fitokaps.xyz/puguxitevapurojedakuxa77syf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403680/normal_5ff4fdfca8065.pdfIn PDF document text
    • http://giocodigital.space/non_resident_landlord_collection_agent_formiltzz.pdfIn PDF document text
    • http://nokasosozigof.mypressonline.com/lg_tromm_washer_error_code_fe.pdfIn PDF document text
    • http://goproits.com/34477526808gb2qq.pdfIn PDF document text
    • http://natikolom.site/3202266967duv6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413573/normal_60317beac240a.pdfIn PDF document text
    • http://walkover.me/the_complete_book_of_demonolatry8manx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416144/normal_600c9c000415c.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/gfphihj/34453537307.pdfIn PDF document text
    • http://penageli.getenjoyment.net/26408225769.pdfIn PDF document text

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