Malicious PDF — malware analysis report

Static analysis result for SHA-256 5508382512d8796c…

MALICIOUS

PDF

68.0 KB Created: 2020-11-21 12:19:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4ed161864f652dcb49f991f14135fc77 SHA-1: de2ea4bf92071aef395ce3953b59b099e90229cf SHA-256: 5508382512d8796c54280269c88e2ec89ed790725bf0c699bedf8145f29dc899
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which are hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains references to 'Boogeyman full movie in tamil', indicating a lure to entice users to click on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffset.ru/aws?utm_term=boogeyman+full+movie++in+tamil PDF link annotation
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/gituvewokokiniwi.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/denezenekug-ludafire-rofiza-dumamepav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426549/normal_5fa9dd280300c.pdfIn PDF document text
    • https://dalenorilesa.weebly.com/uploads/1/3/4/8/134858788/mixagolafukitolitaxe.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/4619565.pdfIn PDF document text
    • https://wosufixojiniki.weebly.com/uploads/1/3/4/7/134720754/wejepakimamuto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9055e7a6-fdd6-4577-a665-0118086a84c4/23273078798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07210d7a-a5a5-4d13-bdf1-d8be4a85e273/jabedose.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/caracteristicas_del_anabolismo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6631f32-5cce-4990-8184-19e6c4eecb54/friedrich_by_hans_peter_richter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/706f6f5e-318b-4cc8-9f4e-f8b3bfe8adef/australian_business_visa_invitation.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/best_biotransformation_hops.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dfb0385-b004-4eca-96ca-53531abd8598/kopapadubizovep.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC57 5024 bytes
SHA-256: 9d2bc226f304be8eb7e2a9546cbcf64dd527d9155ba11cb287763d322944a2fd
font_01_sfnt_off0000dd77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD77 11200 bytes
SHA-256: e6a71f4640d312335e6fc184bb1318885c739c3e8f290d0fe6d0696eee4c3842

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