Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e49fd6e912c4a78…

MALICIOUS

PDF

49.1 KB Created: 2021-02-12 00:01:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ae4b08e13402095d34247e22c6bcf104 SHA-1: 3062fb634230be16e56b932746e626850ad78a41 SHA-256: 3e49fd6e912c4a780e95c60f4954fe15c5d2b522382d23b0088058af18a81428
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and external links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6925

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://baarspo.ru/wb?keyword=appleby%20m&%20a%20report PDF link annotation
    • https://cdn.sqhk.co/rilowikapaz/bpaeiaC/xopiwukekasejaxozo.pdfIn PDF document text
    • http://meetsalon.xyz/foguwuni85mun.pdfIn PDF document text
    • http://getsol.xyz/lokatebiwadevpew0q.pdfIn PDF document text
    • http://uuuuull.space/77422604837fclgl.pdfIn PDF document text
    • http://businessmentality.com/oppo_a37f_firmware_free1jrzu.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/MrUjeUl/22192795415.pdfIn PDF document text
    • https://majotowuwirup.weebly.com/uploads/1/3/5/3/135346036/rekojiw.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/Yifihgd/kewifa.pdfIn PDF document text
    • http://mnatural.space/washtenaw_community_college_academic_calendartt8nd.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/hdxNFje/98309655239.pdfIn PDF document text
    • http://1eyvgo.xyz/daxizu7q4if.pdfIn PDF document text
    • https://gemonozuwusub.weebly.com/uploads/1/3/4/1/134131657/pisodon.pdfIn PDF document text
    • http://falowowujozaba.rf.gd/vezijevupol.pdfIn PDF document text
    • http://divupovive.epizy.com/merger_and_acquisition_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/majanikaxob.pdfIn PDF document text

Related samples 8

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