Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f37d6b816f6df90…

MALICIOUS

PDF

71.8 KB Created: 2021-10-26 09:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: 0b0a2d760f16f24b56dd2fbe3ce9d002 SHA-1: 37984873352873962bf47445bd5d2b6949820130 SHA-256: 5f37d6b816f6df908f4943f9f676fdac96e30975c978e261f3adcdb6dc5b3d87
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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
  • QR business-process phishing lure high SE_QR_BUSINESS_PROCESS_LURE
    Document asks the recipient to scan a QR code in an HR, payroll, compensation, employee-handbook, DocuSign, or business-signature workflow. This is a high-signal quishing/social-engineering pattern even when the QR payload cannot be decoded statically.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://eco-translation.ca/upload/editor/file/3798425377.pdf In PDF document text
    • http://hidropro.hu/upload/52547528249.pdfIn PDF document text
    • http://kenzoum.org/home/integrity/public_html/ckfinder/userfiles/files/4842086727.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210920210744.pdfIn PDF document text
    • http://jiji.pgo.tw/pic/uploads/files/wugokupogi.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/89175631309.pdfIn PDF document text
    • http://polishingmarblefloor.it/userfiles/files/63254697772.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/favir.pdfIn PDF document text
    • http://perfectionistpaintingnj.com/ckfinder/userfiles/files/20928584475.pdfIn PDF document text
    • http://casaperugia.fr/userfiles/file/laruvozerewiwederamano.pdfIn PDF document text
    • http://londonjip.com/userData/board/file/ketisa.pdfIn PDF document text
    • http://smcertificationservices.com/userfiles/files/41930894412.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/26173997762.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/11551550602.pdfIn PDF document text
    • http://safetyassessmentsolutions.co.uk/ckfinder/userfiles/files/46165982951.pdfIn PDF document text
    • http://jmdfhjl.com/fckeditor/userimages/file/zakinadi.pdfIn PDF document text
    • http://urjabatteries.in/userfiles/file/70979711429.pdfIn PDF document text
    • https://pastravariaizvoarelebratiei.ro/images/file/64179563436.pdfIn PDF document text
    • http://learnazia.com/fck/imagesfile/tizutuwe.pdfIn PDF document text
    • http://achilleferolla.it/userfiles/files/parapinibut.pdfIn PDF document text
    • http://delfosventures.net/userfiles/files/57362983282.pdfIn PDF document text
    • http://ohmytour.kr/FileData/ckfinder/files/20211012_F1F292DE03AD6E49.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614007f93eae4---subevipopofurutufikixapa.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/dufalolenula.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/171255217967.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/medukosiradesilejevulixox.pdfIn PDF document text
    • https://coretry.ru/uplcv?utm_term=change+in+enthalpy+of+a+reactionPDF 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_off0000b720.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b720.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB720 16480 bytes
SHA-256: 81fce3e30cf1fd5ea6482861201618870d2c04b65483ef6bcb4711897e90e3bd
font_01_sfnt_off0000e103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE103 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91A 10736 bytes
SHA-256: b76c2c4ebde18d1a0ecbee54e4d6038e23e95a52e80cd051022cab93afa99e53