Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ccaf3a9398fbc9…

MALICIOUS

PDF

306.6 KB Created: 2022-03-26 03:54:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: 639461b4fad16999639f82c29ca8a16f SHA-1: 98e0b370c19c2dd36e54ca7022ad7a8d04ee806e SHA-256: c0ccaf3a9398fbc9c9182ab41badb556d27772cfafa1120ac80ae7b0cd95c084
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6651

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://salda.lt/saldus/kcfinder/upload/files/pevubabe.pdf In PDF document text
    • http://image.dlib.vn/libedu/news/thuvienquangngai/20220325/file/20406223799.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/gomiseviduxumopi.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/rommi1hf9t1ifftaagb4jda3vh/zejuke.pdfIn PDF document text
    • https://ppsu.cz/files/file/42522272449.pdfIn PDF document text
    • http://inphuduong.vn/upload/files/maxogedokil.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16215dea029711---juriwevogetem.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/80334595945.pdfIn PDF document text
    • http://tongdingjixie.com/d/files/91440533468.pdfIn PDF document text
    • http://tomgiongvip.com/uploads/files/file/59739779131.pdfIn PDF document text
    • https://clicksnepal.grnca.org/img/files/files/fajeriremigab.pdfIn PDF document text
    • https://polytex.de/sites/default/files/3792359533.pdfIn PDF document text
    • http://reklama-opole.pl/userfiles/file/78889789344.pdfIn PDF document text
    • http://erpos.sk/data/files/sobujukirita.pdfIn PDF document text
    • https://thermocalnepal.ramjanki.com/ckeditor/kcfinder/upload/files/72993949782.pdfIn PDF document text
    • http://webursitet.org/Files/file/lamagaxelaworekeloni.pdfIn PDF document text
    • http://paradisetnl.com/FileData/ckfinder/files/20220305_05FE4246EA6FA6B6.pdfIn PDF document text
    • http://celox-st.hr/sites/default/files/fck/file/januki.pdfIn PDF document text
    • http://kulukaubandus.ee/files/filemanager/files/zajevazajexisesetulijav.pdfIn PDF document text
    • http://abdobson-new.simplywebeditor.com/site-uploads/vesudakutexiwa.pdfIn PDF document text
    • https://varoslod.hu/kcfinder/upload/files/89751927048.pdfIn PDF document text
    • https://ask-it.softki.com/Ask-it/UserFiles/file///47817723268.pdfIn PDF document text
    • http://webyork.co.uk/kcfinder/upload/files/pamavodadegajofaki.pdfIn PDF document text
    • https://travelbook.kz/kcfinder/upload/files/vijelabadavofefaxakezun.pdfIn PDF document text
    • https://griby.biz/ckfinder/userfiles/files/jekafavoneluvawawojerarog.pdfIn PDF document text
    • http://sivam.pl/files/file/91244681582.pdfIn PDF document text
    • http://happyland-nsk.net/ckfinder/userfiles/files/53517230005.pdfIn PDF document text
    • http://johnmarzillier.com/ckfinder/userfiles/files/narerilalagazoroposi.pdfIn PDF document text
    • http://kleinschadenexpert.com/userfiles/file/detiremiputigatawubagemo.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16218a38c3319d---83389865689.pdfIn PDF document text
    • https://powiedzdoktorze.pl/file/files/67666267898.pdfIn PDF document text
    • http://chestheart.org/journal/assets/ckeditor/kcfinder/upload/files/rokofezo.pdfIn PDF document text
    • http://valburysekuritas.co.id/upload/files/sebusis.pdfIn PDF document text
    • http://tufaghanafc.com/js/ckfinder/userfiles/files/pejegisasanusaguzeb.pdfIn PDF document text
    • http://royalvisas.com/fcs/userfiles/file/sakadevaturozajarenugole.pdfIn PDF document text
    • https://tevav.co.za/XSRYdR1H?utm_term=intermediate+accounting+test+bank+chPDF 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_off00043fb0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00043fb0.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43FB0 11052 bytes
SHA-256: 729105fda3e189d40c5adb3f2088f2f592790a94bce551de9e47361da96cad49
font_01_sfnt_off00045910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45910 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004702a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4702A 16220 bytes
SHA-256: 207eb3b51995adbdef2a766e0364e2c2ee182a7f0f0647c12a4a3807efc046f6
font_03_sfnt_off0004860c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4860C 19668 bytes
SHA-256: 2a6c4aa650b2a5d90c1a76b1ce261f6c468199628bb183013f3c496b0340ab33