Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fde8fbc671129a…

MALICIOUS

PDF

470.8 KB Created: 2021-12-23 07:14:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 51c6bbe78b7afa05a187a3d89201e309 SHA-1: 6498a3c545a60fdf7ccd1d1183607af7c184c1ca SHA-256: a4fde8fbc671129abe4d6d898214045bd7bad0b606d20902c03b80a0fbfcf83f
106 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4741

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://tekmaker.com/upload/files/nujibesi.pdf In PDF document text
    • https://windsbs.biz/files/file/81676690378.pdfIn PDF document text
    • http://bienbao.net/uploads/files/zoserosixave.pdfIn PDF document text
    • https://ddtoyz.com/ckfinder/userfiles/files/jubesolelidawa.pdfIn PDF document text
    • http://edituj.cz/res/file/94889369468.pdfIn PDF document text
    • http://michael-dhom.com/webseiten/file/59914718667.pdfIn PDF document text
    • https://rwd1.thadv.com/upload/files/26581335863.pdfIn PDF document text
    • http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/52079539055.pdfIn PDF document text
    • https://self-storage.sg/images/uploadedimages/file/vanofiruxow.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/19628848473.pdfIn PDF document text
    • http://cesarrodarte.com/userfiles/file/betaxosaperetegitezaje.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/74343854439.pdfIn PDF document text
    • http://nerezove-kuchyne.cz/UserFiles/File/59162286432.pdfIn PDF document text
    • http://shinaval.ru/userfiles/file/tekalofiwif.pdfIn PDF document text
    • https://riwg.in/userfiles/file/30481304568.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161434c8d1eb67---jixawawibepotopujev.pdfIn PDF document text
    • http://tuclubcr.com/campannas/file/dedofifeti.pdfIn PDF document text
    • http://levne-pohary.cz/UserFiles/File/meselusowejavuga.pdfIn PDF document text
    • https://eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/91352538180.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/negowulatifevuretunoxi.pdfIn PDF document text
    • https://pgprojekt.pl/Upload/file/kasubiniximabiwikakarade.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/86405441133.pdfIn PDF document text
    • https://ctcitsupport.com/media/files/dewiwevigagaze.pdfIn PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/rumakubaju.pdfIn PDF document text
    • http://garderoba.sk/images/_file/xawej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=android+10+sony+xperia+xzPDF link annotation
    • 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_off0006e998.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006e998.bin)

Related samples 8

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_off0006e998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E998 10672 bytes
SHA-256: 8d7f166ab896548883663b14d2e68f4838cbdb3cdc80f138caf6826f4223f4e1
font_01_sfnt_off00070240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70240 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000718df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718DF 19424 bytes
SHA-256: 3b1d94b55bce03ddc86b262d611b912d5aa7c478e2a0667c74e0e80c635a5297

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