Malicious PDF — malware analysis report

Static analysis result for SHA-256 634639e638835872…

MALICIOUS

PDF

73.1 KB Created: 2022-04-13 21:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: dac895a5ff125eb298bcab93556adf3a SHA-1: 85d69f68949eb8fb567756168cc3a50ac4fa735e SHA-256: 634639e6388358721a98fbaad6f64a389ede90e18de8ab1d19b3fcc4084088e4
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yoyep.co.za/YmrXLWy8?keyword=manual%20of%20exalted%20power%20alchemicals%20pdf PDF link annotation
    • https://htchninc.com/d/files/6525672377.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/162043209357a9---50810652210.pdfIn PDF document text
    • http://cloudinfo01.smartevolve.com/images/ckeditor/files/ruwinutuveluwe.pdfIn PDF document text
    • https://ssea2.deegbesprofessionalcare.nl/files/File/bapejo.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/47940190690.pdfIn PDF document text
    • http://bwa.olsztyn.pl/bwa3/admin/kcfinder/upload/files/57654922009.pdfIn PDF document text
    • https://bookings.gulfstarsports.com/admin/kcfinder/upload/files/befazuboxiporamamitalujeb.pdfIn PDF document text
    • https://ingrape.ru/files/attach/files/59278528893.pdfIn PDF document text
    • https://novunafa.weebly.com/uploads/1/3/1/3/131379228/b39f49b05.pdfIn PDF document text
    • https://lazeo.nl/userfiles/file/20374984696.pdfIn PDF document text
    • https://xutesinazered.weebly.com/uploads/1/3/4/5/134529246/wipiriremisoge-gamafid.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1622f12217f925---59330468809.pdfIn PDF document text
    • http://pbwi.com.pl/admin/kcfinder/upload/files/81705219368.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/2a52a7c9dca3960affe47e203ac0b275/96326080510.pdfIn PDF document text
    • http://borik.customreal.sk/data/files/91305392961.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe00864faf9---miwojedufoxofisagivodapo.pdfIn PDF document text
    • https://wuvekodufunat.weebly.com/uploads/1/3/5/2/135298648/fobuvesuxiz.pdfIn PDF document text
    • http://lafedja.cz/public/file/gubavadefabov.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_off0000b87d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b87d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB87D 11164 bytes
SHA-256: 591789fe7ba245f62d5512ce3fb4a48110689b52569f70cec65a2a473347e4d6
font_01_sfnt_off0000d277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD277 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ea89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA89 16824 bytes
SHA-256: 0838f348e56812639f09904a75efba6db3c1360b41b8aafc1c92d58d29c3461b