Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f644c2808f5b22d…

MALICIOUS

PDF

408.8 KB Created: 2022-01-02 04:59:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: 1b28f5bb978028ac49df939eae67e5f3 SHA-1: fce80acf8305d6bdaa0cb62554f2a084886cdbb3 SHA-256: 8f644c2808f5b22df06b46c45c4162e8d2d5d0c55a7a4efa050ecf46fd70f7f3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

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://studiotravenzolo.it/userfiles/files/90737653277.pdf In PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d25d72399d---48920879468.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/puwomozitariviwipufoloka.pdfIn PDF document text
    • http://inwallendorf.de/userfiles/file/98863637071.pdfIn PDF document text
    • https://adtw1.com/ckfinder/userfiles/files/danezuxarobetubexitifa.pdfIn PDF document text
    • http://fedime.org/imagenes/70455183012.pdfIn PDF document text
    • http://studiospazioambiente.it/userfiles/files/jenazoxaken.pdfIn PDF document text
    • http://dafangtour.com/fckeditor/userimages/file/93248576318.pdfIn PDF document text
    • http://www.mueblesgamez.com/ckfinder/userfiles/files/33500173315.pdfIn PDF document text
    • http://polaryachtmanufactory.com/res/wysiwyg/file/vofob.pdfIn PDF document text
    • http://mtcongnghiepxanh.com/upload/fckimagesfile/88326680457.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1619bf12298d56---takitizelarugujonora.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4f0fb2c70---3868773265.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161cd47ae34ad2---7398910489.pdfIn PDF document text
    • https://tonymusic.se/UserFiles/files/lumikipazamadivowakidivo.pdfIn PDF document text
    • http://www.pratikchoudhury.com/fckimages/file/42344674525.pdfIn PDF document text
    • https://milkywayads.com/webroot/img/files/64329918570.pdfIn PDF document text
    • http://orthopaede4you.de/userfiles/file/25432672954.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/napigodalunarif.pdfIn PDF document text
    • http://xn----7sbezcba9a5aggb3j.xn--p1ai/ckfinder/userfiles/files/dinasaseperafan.pdfIn PDF document text
    • https://groupunsur3.com/contents/files/navokajoxawuvubarelupi.pdfIn PDF document text
    • http://mayepnuocmia.vn/data/ckfinder/files/74095109838.pdfIn PDF document text
    • http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/76429427733.pdfIn PDF document text
    • http://czytamzezrozumieniem.pl/userfiles/file/ritizipij.pdfIn PDF document text
    • http://minhledtran.com/luutru/files/17696135791.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/UsNeCLCzgYg/uplcv?utm_term=hallucinogenic+drugs+pdfPDF 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_off0005ebfb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005ebfb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005ebfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBFB 10788 bytes
SHA-256: b12e9acff816b363935171873538aae77361f8c4d491016ec9244c156bb82b65
font_01_sfnt_off000604a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604A3 21820 bytes
SHA-256: 4657903a69296fa1b10e3e45be474ddd792ae660b1a11085516a8e8953361327
font_02_sfnt_off00063d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D81 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336