Malicious PDF — malware analysis report

Static analysis result for SHA-256 009cef6b0d262d06…

MALICIOUS

PDF

71.9 KB Created: 2021-03-04 09:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1aa3efd00cafb2031a9c611a4cdc6eb1 SHA-1: b4dd0eb56a965b0d4ed4b275531cd58cdad188d3 SHA-256: 009cef6b0d262d060b32bc6637588bc0589cffb3f18d094b52e85df831323488
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites, likely as part of a phishing or SEO manipulation scheme.

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://baarspo.ru/wix?keyword=factor+label+method+practice PDF link annotation
    • https://namosozevo.weebly.com/uploads/1/3/0/9/130969937/cfc7ce1eebb.pdfIn PDF document text
    • http://agnewjacobs.com/zeloraduruguzejimiwemudh8u3q.pdfIn PDF document text
    • https://vuzozemipasu.weebly.com/uploads/1/3/6/0/136051601/78d5ff5de6.pdfIn PDF document text
    • http://clientbluebadge.com/buwujagurilepexerumafirf8mg7.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/ggihgiX/12262258850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_602af9494da60.pdfIn PDF document text
    • https://gusijanuvo.weebly.com/uploads/1/3/0/8/130874241/wuxovotekunonu_negaz_wezifij_risexosak.pdfIn PDF document text
    • https://cdn.sqhk.co/baxoladipezu/k7qhjhh/52211349608.pdfIn PDF document text
    • http://dorightpress.com/99188262853i4krz.pdfIn PDF document text
    • https://mevinabepoke.weebly.com/uploads/1/3/2/7/132740553/1447654.pdfIn PDF document text
    • https://sepafolelobonel.weebly.com/uploads/1/3/4/6/134614676/rixipokojabusog-nomeme.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/godewumazek/dutixas.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/vokaxoxituxok.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/pathogenesis_of_irreversible_cell_injury.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD29 5228 bytes
SHA-256: 03b4d0b436d0f9311668802a5eb44f25a841da426d492872027747de9c8b3a96
font_01_sfnt_off0000eebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBF 10468 bytes
SHA-256: ee9f13f6427c17a457c595d59e3338807d502c22887bd989ed4541a46a7ada16

Open this report in the interactive analyzer, or submit your own file for analysis.