Malicious PDF — malware analysis report

Static analysis result for SHA-256 2581f456babaf66b…

MALICIOUS

PDF

75.8 KB Created: 2022-04-08 14:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: ab303175b003d7cdae8c347dcc0ca234 SHA-1: c9819cf3ba2e419ee99d32dc23d8ccefb57b3d53 SHA-256: 2581f456babaf66b3cbc8493d99a1cb48da26efe41358dd3fdea7bdebb5bcb46
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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%20calculate%20food%20waste%20percentage PDF link annotation
    • http://kargo-box.com/uploads/files/5626092015.pdfIn PDF document text
    • http://www.2m-france.com/img/uploaded/file/vezekirafijolesasuxefug.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/18395818735.pdfIn PDF document text
    • https://mufipegiko.weebly.com/uploads/1/4/1/3/141305374/7516157.pdfIn PDF document text
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/b70f87b29bc68.pdfIn PDF document text
    • https://wakabidodez.weebly.com/uploads/1/3/4/6/134632857/39f655ed58.pdfIn PDF document text
    • http://parentini.it/userfiles/files/11953566981.pdfIn PDF document text
    • https://nugobobunebiset.weebly.com/uploads/1/3/5/3/135303429/pirapolizab.pdfIn PDF document text
    • https://nazolaruwesibag.weebly.com/uploads/1/3/1/4/131453197/abc85d.pdfIn PDF document text
    • https://zukaxalu.weebly.com/uploads/1/3/1/4/131406202/d150b2939df596.pdfIn PDF document text
    • http://kme-kme.cz/files/file/pibuzamefipi.pdfIn PDF document text
    • https://dawukobisoxewi.weebly.com/uploads/1/3/4/0/134040495/xilura.pdfIn PDF document text
    • http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/13397225404.pdfIn PDF document text
    • https://wazajodowefode.weebly.com/uploads/1/3/4/0/134017502/loxidavo.pdfIn PDF document text
    • https://rutimorogurura.weebly.com/uploads/1/3/7/5/137507512/zulapurene.pdfIn PDF document text
    • https://wuzezabor.weebly.com/uploads/1/3/1/4/131438899/xubopawode_gogumow_kegojaporo_fegenekazejig.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/5687e4bd80c7cc5a3197ab7590b6c392/vudulut.pdfIn PDF document text
    • https://pefizisiguxuv.weebly.com/uploads/1/3/1/4/131438819/rijomulaninaledij.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/40086655485.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/53800285194.pdfIn PDF document text
    • https://zetojaxonafavop.weebly.com/uploads/1/3/5/3/135309172/4aed32.pdfIn PDF document text
    • http://thanhthien.com/upload/tt2016/files/22569216214.pdfIn PDF document text
    • https://lepamume.weebly.com/uploads/1/3/4/8/134882258/tobamigumelovu.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_off0000c2ed.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c2ed.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2ED 10880 bytes
SHA-256: 42e414e2c391b46e268d17ade0a505e61cba7dbeb7865a8de9afd1411ad80dc5
font_01_sfnt_off0000dc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC11 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF423 17496 bytes
SHA-256: 375edc09db23f645b0c1a6a039c8e674e2c29896f221c79c9d6ef7848ca418f9