Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f36effdd746ed6…

MALICIOUS

PDF

80.1 KB Created: 2022-04-27 13:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: b3d160c21dd0555e5b0d02291160ebd7 SHA-1: 815ad163d13fa77a592e80f73d82dc22ac0cff55 SHA-256: a4f36effdd746ed6104adebc19bd849ed32b164c593ecc94b03fbf6c254ae5fe
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lovig.co.za/YmrXLWy8?keyword=how%20would%20you%20describe%20a%20sunrise PDF link annotation
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1621cb798aa8eb---ruzesup.pdfIn PDF document text
    • https://felicityokolo.com/file/xikapefifinapegifovidamet.pdfIn PDF document text
    • https://hideab.se/tc/Mediagalleri/file/pogapefawaradesen.pdfIn PDF document text
    • http://kawarulabo.com/app/webroot/js/kcfinder/upload/files/daxubomidanezefoj.pdfIn PDF document text
    • https://sealskinz.ru/files/file/84435824342.pdfIn PDF document text
    • http://klenderbio.com/upload/files/tesixof.pdfIn PDF document text
    • http://asirakademi.com/resimler/files/pomitubowamugijolotula.pdfIn PDF document text
    • https://www.colegiocapitanarturoprat.cl/third_party/ckeditor/kcfinder/upload/files/rozof.pdfIn PDF document text
    • http://swiftnb.com/ckfinder/userfiles/files/65102854295.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/jawufatinapotofirar.pdfIn PDF document text
    • http://live-net.it/file/55250015332.pdfIn PDF document text
    • http://reopen911.info/media/file/58543764914.pdfIn PDF document text
    • http://shengyaweb.com/uploadfile/file/2022031016091649.pdfIn PDF document text
    • https://maintogelonline.bet/contents/files/fegujamifezo.pdfIn PDF document text
    • https://allora-tour.by/var/upload/file/2181147948.pdfIn PDF document text
    • http://bccp-cam.com/kcfinder/upload/files/50262429414.pdfIn PDF document text
    • https://zenit-npk.ru/files/file/2739097587.pdfIn PDF document text
    • https://gbp.dropship-online.com/userfiles/files/59165670717.pdfIn PDF document text
    • https://www.tocbirsen.org.tr/ckfinder/userfiles/files/rupununod.pdfIn PDF document text
    • http://smartbazar.online/app/webroot/upload/files/8694667149.pdfIn PDF document text
    • https://sangogiaphuc.com/admin/webroot/upload/image/files/tiverokakan.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_off0000d5d2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d5d2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ede4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE4 16948 bytes
SHA-256: 069a5477ce0df32ee7c3224c2b972b067696dbe9837296c547095bba34dc8150
font_02_sfnt_off00011a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5F 10696 bytes
SHA-256: 6d7a0349f979cf1023bf877acf1535dd4290c165fd9433b847842e151faa394c