Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c26251c82f9e5…

MALICIOUS

PDF

78.4 KB Created: 2022-04-16 02:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 3f9ad8ccd0fbabbd024d33cda7ac5f38 SHA-1: 2ac6562ecfaad99b1e3d1eb2bf907b00c35e8ffb SHA-256: 425c26251c82f9e50dd4e84cb538ef560482092c4ef330614cb63e17d79c5760
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://podar.co.za/YmrXLWy8?keyword=how%20to%20write%20a%20critical%20review%20of%20a%20medical%20journal%20article PDF link annotation
    • http://kiapelhrimov.cz/UserFiles/File/78352655679.pdfIn PDF document text
    • http://oks.urmon.uz/kcfinder/upload/files/14395121142.pdfIn PDF document text
    • http://iuppiteredizioni.it/kcfinder/upload/files/mozefilevilu.pdfIn PDF document text
    • https://arcadiaquartet.com/prod/files/62697158590.pdfIn PDF document text
    • https://nozezezolakufu.weebly.com/uploads/1/3/2/6/132695232/7108639.pdfIn PDF document text
    • https://retinagarar.weebly.com/uploads/1/3/4/3/134319249/4034371.pdfIn PDF document text
    • https://xinefozi.weebly.com/uploads/1/3/0/7/130775465/8347409.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16250046c859cd---48606926803.pdfIn PDF document text
    • https://xoxulesajoxe.weebly.com/uploads/1/3/1/4/131438427/752430.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/65912663329.pdfIn PDF document text
    • http://sun-dr.com/uploads/files/202202212029481321.pdfIn PDF document text
    • http://huyminhplastic.com/upload/files/34530002583.pdfIn PDF document text
    • https://nekewagan.weebly.com/uploads/1/3/4/8/134881830/9808206.pdfIn PDF document text
    • https://vevitukag.weebly.com/uploads/1/3/7/5/137506107/5032126.pdfIn PDF document text
    • https://buvefejam.weebly.com/uploads/1/3/1/4/131453018/9708944.pdfIn PDF document text
    • https://pumewuku.weebly.com/uploads/1/3/4/6/134638235/8975943.pdfIn PDF document text
    • https://lesuwigiwojan.weebly.com/uploads/1/3/4/3/134309114/dae507f.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161f8cbb32c04b---23170698072.pdfIn PDF document text
    • https://pipabuxogopufa.weebly.com/uploads/1/4/1/3/141371689/vasud-rifodunagagove.pdfIn PDF document text
    • https://www.smartfutureexpo.com/ckfinder/userfiles/files/dugawededotujuxo.pdfIn PDF document text
    • https://kivoranove.weebly.com/uploads/1/3/4/6/134679810/b5569ac06653ca6.pdfIn PDF document text
    • https://sirakodur.weebly.com/uploads/1/4/1/2/141299604/57f2459cc1a4.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_off0000ce29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE29 17268 bytes
SHA-256: ec7532025838be4b00b8436a505c1358620bfc0c75d4c25551e19825432354d0
font_01_sfnt_off0000faed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAED 10840 bytes
SHA-256: 56ba306bab351eff6fb0bc1457702ff197c3f2d9b015733c2e2ae7b27ffbd122
font_02_sfnt_off000113e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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