Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd182c62d5fd048e…

MALICIOUS

PDF

78.7 KB Created: 2021-02-22 11:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d2712beaee53d284412f270ddab56742 SHA-1: 3e743b8c7b7bd1bcec958b3f6fdad9f1fbd29afa SHA-256: cd182c62d5fd048e8841debd0048f9cf5cfff61554d36bc28d05c6649f51eee2
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external websites, many hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for SEO manipulation or phishing. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially harmful content.

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://druttle.ru/strik?utm_term=when+did+christianity+spread+in+rome PDF link annotation
    • https://nilemesobipefuj.weebly.com/uploads/1/3/2/3/132303022/sobonizat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5fd679dd07aa5.pdfIn PDF document text
    • https://cdn.sqhk.co/semejegofip/agfm6l8/fujupadizosukeg.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/a8b3063c8080.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417220/normal_5feb466f4822c.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/ijheGsO/wigitakuzenato.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/iijVidk/canon_imagerunner_2204n_scanner_driver.pdfIn PDF document text
    • http://fusifasuroxeso.22web.org/35550485179.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/Dqgdhgf/pathogenicity_meaning_in_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/iBjl3Eb/21633642514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476142/normal_6029ebf0b8395.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/2hiEjaY/99394199925.pdfIn PDF document text
    • https://teraxawazolazov.weebly.com/uploads/1/3/4/3/134386914/golelifina.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/pusudipubopegase.pdfIn PDF document text
    • https://tutemedoz.weebly.com/uploads/1/3/2/8/132814241/c73fc6ca060a47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468571/normal_6025f5c00aae0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mijekobafenado.rf.gd/wd_-_my_passport_ultra_for_mac_4tb_external_usb_3.0.pdfIn PDF document text
    • http://gomiguru.epizy.com/whatsapp_gb_apk_last_version.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/vpn_browser_for_ubuntu.pdfIn PDF document text
    • http://metepukiwameme.epizy.com/maytag_bravos_x_washer_parts.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_off0000f63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63C 5396 bytes
SHA-256: 6d6d80f28a6788517b6c9439d04be68c8abe8bf2ac80f4d4e9e863e0c4cd2be5
font_01_sfnt_off0001087f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087F 10380 bytes
SHA-256: 5e0915f7c656e9c5715edfc535cc495f5feee2f060b6501205b6a05b6a90564d

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