Malicious PDF — malware analysis report

Static analysis result for SHA-256 741a4b6ed22ae205…

MALICIOUS

PDF

52.6 KB Created: 2021-02-09 22:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5fa027696652e445fd289475d19108da SHA-1: 6b1a2a4e5bb83580bb59134f71aa8d546a4f72e0 SHA-256: 741a4b6ed22ae2051b2b8f8888925105c9495e2f6ae525988745de1b157df7a0
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to direct users to potentially malicious content. The ClamAV detection and ML classifier also flag this file as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the nature of the PDF and its embedded links strongly suggests it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6442

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://jottigo.ru/aws?utm_term=sarrainodu+audio+songs+telugu+lo+ing PDF link annotation
    • http://jofarofuwudeveb.66ghz.com/aws_cloudformation_sts_assume_role.pdfIn PDF document text
    • https://gawudizilox.weebly.com/uploads/1/3/5/3/135300959/2e523ff8c13a.pdfIn PDF document text
    • https://daxosunusopudom.weebly.com/uploads/1/3/4/5/134510034/ff58bac10.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/9f8705.pdfIn PDF document text
    • https://cdn.sqhk.co/bodevoposuji/igchhvQ/love_ringtones_telugu_download_2020.pdfIn PDF document text
    • https://solugelefeko.weebly.com/uploads/1/3/0/7/130740562/d1b2d2aea.pdfIn PDF document text
    • http://gesizuwumog.iblogger.org/81709975936.pdfIn PDF document text
    • https://tijagure.weebly.com/uploads/1/3/1/3/131398232/wafajeb.pdfIn PDF document text
    • https://duveniwapawas.weebly.com/uploads/1/3/4/2/134265961/bojaroladutor.pdfIn PDF document text
    • https://pazijovipa.weebly.com/uploads/1/3/4/3/134327002/livakidawimozaki.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/cisco_flexconnect_switchport_configurations532y.pdfIn PDF document text
    • http://rasprodavaika.ru/benim_hocam_corafya_genel_tekrar_20d5h93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417319/normal_5fc5b8c2d7faa.pdfIn PDF document text

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