Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe86aaa76690f24…

MALICIOUS

PDF

493.5 KB Created: 2022-03-03 23:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: 64da0299cd08cc8fef567bb02b82a04b SHA-1: 1ebaeb72a78ad7103aa20ed82b6fb5fde8706be0 SHA-256: cbe86aaa76690f248da7946423cd79dceb54165f9ee5f762b270cad6d30226bb
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5017

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yubit.co.za/XSRYdR1H?utm_term=worksheet+possessive+pronouns+pdf PDF link annotation
    • http://tucholainfo.pl/userfiles/file/63397585956.pdfIn PDF document text
    • http://batteryzone.pk/assets/kcfinder/upload/files/zifaxasone.pdfIn PDF document text
    • http://serbanindustrialconstruct.ro/uploads/files/patowulipaxarevuminizoveb.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/162203bf4a0d27---3892548254.pdfIn PDF document text
    • http://mtrendgroup.com/MTrendGroup/uploadfile/fck/file/xatomuwejeji.pdfIn PDF document text
    • http://makrostal.pl/user_images/file/12654895411.pdfIn PDF document text
    • http://fulico.com/v15/Upload/file/2022227646255901.pdfIn PDF document text
    • http://kapelski.pl/userfiles/file/20934220029.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20220227114800.pdfIn PDF document text
    • http://dolphinkorea.com/files/files/83575930131.pdfIn PDF document text
    • http://sergeisurzhin.ru/ckfinder/userfiles/files/80335652425.pdfIn PDF document text
    • http://wittymall.com/multimedia/userfiles/file/64730806960.pdfIn PDF document text
    • http://www.velkoobchod-man.eu/ckfinder/userfiles/files/73442672595.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/jomizuzinumigovegivaz.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/26421614566.pdfIn PDF document text
    • https://hungarogun.hu/feltoltes/files/zepakajon.pdfIn PDF document text
    • http://koreaseals.com/ckfinder/userfiles/files/pobeduxemelemax.pdfIn PDF document text
    • http://tmservice.nl/bestanden/files/tazuv.pdfIn PDF document text
    • https://hockeymro.ca/docs/file/32876896357.pdfIn PDF document text
    • http://flashdisplay.net/UploadFiles/FCKeditor/20220203053301.pdfIn PDF document text
    • https://www.misuhuko.com/assets/kcfinder/upload/files/29990222145.pdfIn PDF document text
    • https://vnycc.com/userfiles/file/7452716638.pdfIn PDF document text
    • http://bfup.org/ckeditor/kcfinder/upload/files/vubesemofiwozunuw.pdfIn PDF document text
    • http://lohoithaiduong.com/uploads/files/dafom.pdfIn PDF document text
    • https://finest.ccmgs.it/docs/file/72551937525.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_off000746d2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000746d2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000746d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746D2 18388 bytes
SHA-256: d72767d9996e25e06a56f2343bd3b5315c79c6e9319b99db2f5ae849ac2059b1
font_01_sfnt_off00077701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77701 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00078e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E21 10636 bytes
SHA-256: 212bfbc7eab3a429331eb36db8cd5f6db1adf4f7446e23f41b0cbb4243c36abd