Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc721c6cedfa8ef…

MALICIOUS

PDF

440.2 KB Created: 2022-01-13 15:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 16466184928932a676fe8f074f77bc72 SHA-1: cd71a93c66781cba415ab992669937ffdc2ddba4 SHA-256: 3bc721c6cedfa8efaa4149311dcec90d629a4bf3c080d6fec1ce00411c8aed5e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5432

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
  • 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.
  • 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.
  • 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 http://thevalleytrader.com/files/verase.pdf In PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/12159078439.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed911126ac---56076681130.pdfIn PDF document text
    • http://gzmingjun.com/uploadfile/files/20210907_134429.pdfIn PDF document text
    • http://cozyboutiquecruise.com/upload/fck/file/10881631810.pdfIn PDF document text
    • https://mmgrowersg.com/ckfinder/userfiles/files/tusiguxebenuwige.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/zaverirerozavoberor.pdfIn PDF document text
    • http://kabinet.puzat.ru/marafon/uploads/files/94581961396.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ca39a24e85---81520718460.pdfIn PDF document text
    • http://diepdoanhmetals.com/media/ftp/file/53686557299.pdfIn PDF document text
    • http://huspanda.com/data/ckfinder/files/xibovirej.pdfIn PDF document text
    • https://riwg.in/userfiles/file/96906111036.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161bc866f22c48---patanunipu.pdfIn PDF document text
    • http://www.bongbansaigon.com/uploads/files/donizus.pdfIn PDF document text
    • http://erex.hu/upload/file/3864828453.pdfIn PDF document text
    • http://tofuyatogo.com/uploads/files/28108062186.pdfIn PDF document text
    • http://sp3siemianowice.pl/userFiles/files/45060783787.pdfIn PDF document text
    • https://agmatbaa.com/upload/files/61224796497.pdfIn PDF document text
    • http://saigonradio.com/userfiles/file/bowiwili.pdfIn PDF document text
    • http://demo-enriquemora.shopcloud.es/ckfinder/userfiles/files/90425360313.pdfIn PDF document text
    • http://iq-money.ru/upload/files/43207749241.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20211023144258014.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/35455246847.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/cmwvf4RlXg4/uplcv?utm_term=bradycardia+guidelines+ukPDF 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_off00067330.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00067330.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00067330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67330 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000689cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689CF 17716 bytes
SHA-256: 02d0acbef281da950ad37f52ca0178b6d9a2c8e9fd56258bf555ac1c5475ac1c
font_02_sfnt_off0006b7ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7CE 10688 bytes
SHA-256: bbfa3835b030d8b6aa9b3fc0ec48fa32e8353b9ea7892cdefa88ce0d11a90982