Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8bb8f21be8580d…

MALICIOUS

PDF

82.2 KB Created: 2022-03-30 10:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: a95c248c0a5e1d12c1361f1c8228a111 SHA-1: 140d2bbcd525399cfe8a50e301092e24c64ea61c SHA-256: cb8bb8f21be8580d36a9a07f797fca32e57c9b4e8f8f15022ef69bb018b7333c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://norin.co.za/YmrXLWy8?keyword=dan%20harrington%20cash%20games%20volume%201%20pdf PDF link annotation
    • https://pestresolution.pt/site/upload/file/75824944619.pdfIn PDF document text
    • https://givumiwiv.weebly.com/uploads/1/3/4/8/134879308/1cc469592ff0a6c.pdfIn PDF document text
    • https://kogijusixi.weebly.com/uploads/1/3/5/3/135312463/ad3bcf9e.pdfIn PDF document text
    • https://zidimegaga.weebly.com/uploads/1/3/0/9/130969389/7531226.pdfIn PDF document text
    • http://sapthagireesyathra.com/userfiles/file/vawixevitavexu.pdfIn PDF document text
    • http://thiennhanduong.com/ckeditor/kcfinder/upload/files/taminotawegagotowogodojup.pdfIn PDF document text
    • https://gozozogedabasiw.weebly.com/uploads/1/3/4/3/134321967/1e133a.pdfIn PDF document text
    • https://zemexiwo.weebly.com/uploads/1/3/4/3/134321437/8575962.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/zakebupipoxuw.pdfIn PDF document text
    • https://biwamuneluzotip.weebly.com/uploads/1/3/2/6/132696598/2168371.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/161fbc84ae4992---nowizikejejejupuminomiter.pdfIn PDF document text
    • http://ares-gunshop.sk/admin/ckeditor/kcfinder/upload/files/semobanenilokowidomif.pdfIn PDF document text
    • https://klcmekatronik.com/ckfinder/userfiles/files/noxumubavelewiranurel.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/firinolojiv.pdfIn PDF document text
    • http://riversedgefm.com/files/file/91589726863.pdfIn PDF document text
    • http://medcentervrn.ru/userfiles/files/71149083506.pdfIn PDF document text
    • https://foxufaba.weebly.com/uploads/1/3/1/4/131482874/vojanuje-sumokijedok.pdfIn PDF document text
    • http://zpkprzemysl.pl/ckfinder/userfiles/files/powato.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/torukus.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000dbe0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dbe0.bin)

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE0 11288 bytes
SHA-256: e7e73e88eafeb6b8f7f16455f9fc77eaee3202212c4d84a933383d265791025e
font_01_sfnt_off0000f60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60A 17292 bytes
SHA-256: 1a625b4c5afa6cd1dabfef2ec52919a24f84ba713e5021c88f35b89749e81894
font_02_sfnt_off00012383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12383 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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