Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c10746831111097…

MALICIOUS

PDF

50.6 KB Created: 2021-02-11 09:54:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4f7745a2da85e0388b2962a4696c3b92 SHA-1: aa42cd35561e8b9da9055b5fe6b81fe4e028e67d SHA-256: 2c107468311110972dd86a86ddd7fe92a3377463cb67a8a0ec56787ef3b1aa50
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Network updater free', indicating a lure to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7434

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://bologen.ru/aws?utm_term=network+updater+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383924/normal_5fc6776c119df.pdfIn PDF document text
    • https://kilizilefepik.weebly.com/uploads/1/3/0/7/130775254/tudomutagazek-rejokile-madatefureje-zurek.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/gamosaraburug-ludike.pdfIn PDF document text
    • http://teasmall.space/govedimulopubaxevorx20bk.pdfIn PDF document text
    • http://reduslimitalia.site/heroes_and_merchants_rpg_bestl6gsv.pdfIn PDF document text
    • https://sikufotoxatufik.weebly.com/uploads/1/3/4/4/134458503/3853227.pdfIn PDF document text
    • https://cdn.sqhk.co/bokirebi/MJtibji/british_declaration_of_war_ww2.pdfIn PDF document text
    • https://vekoduxiboba.weebly.com/uploads/1/3/1/3/131398498/3bd1ae2.pdfIn PDF document text
    • https://bebojeraje.weebly.com/uploads/1/3/5/3/135302211/7312300.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/zodoputidedapi.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/kiran_typing_tutor_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/68162707139.pdfIn PDF document text

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