Malicious PDF — malware analysis report

Static analysis result for SHA-256 726ace13bdd26b1c…

MALICIOUS

PDF

334.2 KB Created: 2022-03-16 20:47:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-12
MD5: f041ba98b123b41846cc40d722b14cb3 SHA-1: 4fadc76b6a2bcb9ceac82d8bc872818be7c3d1aa SHA-256: 726ace13bdd26b1c77ec4d23cb20be9149d2f98e08aced55a7fa2de8d6f2ef1f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8308

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 https://colod.co.za/XSRYdR1H?utm_term=desktop+wallpaper+quotes+free PDF link annotation
    • http://officegate.biz/admin/fck_upload/file/sokafuge.pdfIn PDF document text
    • http://cttinteriery.cz/files/upload/files/87559488083.pdfIn PDF document text
    • http://andreaslasnik.com/data/files/tofaz.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/lujefipojikofixuga.pdfIn PDF document text
    • http://uveteknik.com/uploads/files/nogupofutekexejub.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/51061931846.pdfIn PDF document text
    • https://www.steyr-mannlicher.hu/admin/kcfinder/upload/files/1183274163.pdfIn PDF document text
    • http://sintjorisparochie.nl/userfiles/file/92300313453.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/lerazorawila.pdfIn PDF document text
    • http://ingore.cn/upload/files/84644402686.pdfIn PDF document text
    • http://bigyikesmedia.com/home/xtremweb/public_html/consultinstitute/web/upload/files/katowez.pdfIn PDF document text
    • http://belcanto-evenements.com/media/files/luvuwuxitemeramaxapuxido.pdfIn PDF document text
    • https://n-vv.dk/userfiles/file/76886526660.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/uab93ec8psf873deiq10lcrpna/paferogalin.pdfIn PDF document text
    • https://www.rioclaro.com.co/kcfinder/upload/files/rekimokarajimobogu.pdfIn PDF document text
    • https://gazdalkodjokosan.hu/img/userfiles/file/tiputatazoloxoziledejotoj.pdfIn PDF document text
    • http://ajej.pretty-match.com/upload/files/makebosamemo.pdfIn PDF document text
    • https://konkrea.be/uploads/files/xiluvonafuxaketax.pdfIn PDF document text
    • https://whereestar.com/marinarubicon/admin/file/93344364565.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/2t1s2kv3hldb2bpipkcanoh885/mirofoliligos.pdfIn PDF document text
    • http://gktizein.gr/kcfinder/upload/files/jeminoxozif.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/98f5fff8faa28f8ad4682ff9f148e2d0/82009828775.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_off0004c990.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004c990.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004c990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C990 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004e0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0AB 18664 bytes
SHA-256: 7837e51058e0866c2532aa337a1fd51f2a32d9212fae2d1b915e70158b88550f
font_02_sfnt_off000511f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x511F1 10580 bytes
SHA-256: bb5c9e90896989d4a67bfb90077ca47bdcc63c377b0722ce7da7c84089cf6417