Malicious PDF — malware analysis report

Static analysis result for SHA-256 5792c10342a48b53…

MALICIOUS

PDF

57.2 KB Created: 2021-02-26 23:35:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f613f9ef81aca2728b0fb326af4bb519 SHA-1: fc92a8eb759f82c5e2dd66c6ab6f1fb88fb5850c SHA-256: 5792c10342a48b537897a9f3e9143fa8377c5ca245d5e51407e4d02d646992a5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links pointing to various domains, many of which appear to be disposable or used for SEO manipulation. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to malicious content or phishing sites. While no scripts were explicitly extracted, the nature of the link farm suggests a distribution mechanism for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9075

Heuristics 5

  • 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 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.
  • 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://dugedepap.ru/award?keyword=feta+pasta+calories PDF link annotation
    • http://probnik1313.tech/ableton_live_10_lite_project_files68c3w.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/laxivilagowa_kivotokut_nenulejaluku_zexomoxodolit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493266/normal_601f53d33df68.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/9116759.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403264/normal_5feb0ed3bf94d.pdfIn PDF document text
    • https://godikifamubexi.weebly.com/uploads/1/3/4/6/134622632/foredox.pdfIn PDF document text
    • https://kegotewu.weebly.com/uploads/1/3/1/4/131437679/nomewufuxewiwoz_xiwilatu_fazukaguli_fotunurukaxe.pdfIn PDF document text
    • http://vitalia-transports.com/luwekuwoxukoszvfrd.pdfIn PDF document text
    • https://lepopitiw.weebly.com/uploads/1/3/4/7/134762721/8417550.pdfIn PDF document text
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/kabofuwubako.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/babexinapazeximomano.pdfIn PDF document text
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/b736f8d14315.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/18795229627.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/how_do_you_know_if_your_flame_sensor_is_bad.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/amar_chitra_katha_mahabharata.pdfIn PDF document text
    • http://negifunowulag.rf.gd/30075609970.pdfIn PDF document text