Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8575e3f5d4459c…

MALICIOUS

PDF

76.1 KB Created: 2022-03-28 00:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 4cf81999a0ddaa871664fba8c31f6f58 SHA-1: 0d374273db8cd3be23b559ee0680d32bce17c9c5 SHA-256: aa8575e3f5d4459c86ecce0ba4c5e5df7c68701aa34d63249e7a1cc45f570bfb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://yubit.co.za/YmrXLWy8?keyword=how%20to%20use%20jitterbug%20smart2 PDF link annotation
    • https://nulosumewure.weebly.com/uploads/1/3/4/6/134645663/5494066.pdfIn PDF document text
    • https://nidetufuw.weebly.com/uploads/1/3/6/0/136097009/f617c3.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/c46315dcea45a.pdfIn PDF document text
    • https://dozumudokasalog.weebly.com/uploads/1/3/4/9/134902229/0f623e4beb1.pdfIn PDF document text
    • https://gelixilononusi.weebly.com/uploads/1/3/0/7/130775878/888ca0.pdfIn PDF document text
    • https://xoxamotanu.weebly.com/uploads/1/3/4/6/134653835/wavananadojeman-siwinati.pdfIn PDF document text
    • https://zozajiditufex.weebly.com/uploads/1/3/5/3/135309939/2a13ae2997.pdfIn PDF document text
    • https://vasoxalevevox.weebly.com/uploads/1/3/4/4/134477515/4f8640.pdfIn PDF document text
    • https://nawopudupavipe.weebly.com/uploads/1/3/4/8/134856820/zuvupiwenelifewuse.pdfIn PDF document text
    • https://miwidekufaxojud.weebly.com/uploads/1/3/4/7/134753597/zipotixubeserexa.pdfIn PDF document text
    • https://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/pusud-zudura-lovasekival-moxug.pdfIn PDF document text
    • https://worikakejimo.weebly.com/uploads/1/3/4/4/134466185/sagegekarorodozik.pdfIn PDF document text
    • https://dowanolisedu.weebly.com/uploads/1/3/6/0/136056386/678f118c7d.pdfIn PDF document text
    • https://kidodizaramaba.weebly.com/uploads/1/3/4/0/134096495/2973131.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71D 17240 bytes
SHA-256: 142d25d22e68ba7e53c6d1af190c2da093316b6d6554ff2e971d4ee11847b2b2
font_01_sfnt_off0000f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF429 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00010acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACD 10868 bytes
SHA-256: f6c429761b8d5a2a2b0f6b473c6a79948a2dfd3541da9e4ff94a223361c5c82a

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