Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8978e4172e760d…

MALICIOUS

PDF

72.7 KB Created: 2021-03-20 11:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: f918b8383a044fefcb7df93fc5651af1 SHA-1: 07878ef7095dd27aa1410cbf7958b44e23ce9a8e SHA-256: aa8978e4172e760de2d8167c0479206497035041e85c7c6d6a4aa097f5ee07d7
196 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://golowaki.ru/123?utm_term=beats+solo+3+wireless+rose+gold+manual PDF link annotation
    • https://nefupoxuwuridek.weebly.com/uploads/1/3/4/7/134747690/4564790.pdfIn PDF document text
    • https://nasiposeki.weebly.com/uploads/1/3/4/7/134709897/9504614.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/bisogidavewexo.pdfIn PDF document text
    • https://wuwiragirek.weebly.com/uploads/1/3/0/8/130874366/lutasepiju-farox-zutuzidig.pdfIn PDF document text
    • https://xosebabonewita.weebly.com/uploads/1/3/4/6/134613761/8017997.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/navy_selres_advancement_results_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/59747106665.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/flowers_of_algernon_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/attachment_report_conclusion.pdfIn PDF document text
    • https://7c3dd69e-6649-485e-b385-36acc2971cd6.filesusr.com/ugd/cf9ff1_bc44800127cf46da9af8bc5912772d76.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sixolose/sofebefapezelaxesuli.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/bioshock_infinite_strategy_guide.pdfIn PDF document text
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_456633e98505440db0a77f16b5490a34.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/foxediwe.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/hong_kong_visa_application_form_id995a.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/assist_synonym_formal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA4 6168 bytes
SHA-256: de6aacb5a55f55b98bf3ae384f96a51051c900e5a59c241f5198d539ce1a3af5
font_01_sfnt_off0000de44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE44 5448 bytes
SHA-256: 3cf75144efe732c950211f5e62f68037e92cc4b0e35a24a0c2ed2639f1708944
font_02_sfnt_off0000f0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C7 10812 bytes
SHA-256: 9340ef53e0d9e0319ec8134d84d3dde15e55ef85438d0ff818ba8044d5fcda62

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