Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb81cee2b8b26fe4…

MALICIOUS

PDF

357.3 KB Created: 2022-03-22 19:42:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 13651a4f9ca642cd02eb0a1fa9e8f907 SHA-1: 23c489f4f26fb8a522bdc881a17ccd013c8da8fb SHA-256: cb81cee2b8b26fe408a456b03f2b079bf7066b748025d3441b5644e10dd020d3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • 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://tevav.co.za/XSRYdR1H?utm_term=affidavit+of+support+sample+letter+for+spouse PDF link annotation
    • http://canxetaianhduc.com/images/file/dikaxowusotoluxewuniwapem.pdfIn PDF document text
    • https://autoserviziparlatore.it/filesUploads/file/50095846520.pdfIn PDF document text
    • https://fobh.net/userfiles/files/faxofevekazu.pdfIn PDF document text
    • https://ppic.net-line.pl/www/js/kcfinder/upload/files/xodani.pdfIn PDF document text
    • http://dgone.kr/userfiles/file/20220217073020.pdfIn PDF document text
    • https://thietbiotoviet.com/Images_upload/files/tesurezilutot.pdfIn PDF document text
    • https://genia-groupe.fr/images/files/58311004566.pdfIn PDF document text
    • http://cuuthuong115.com/ckeditor/kcfinder/upload/files/gajafop.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/7423139482.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/162211d9c7feba---xuviwozerimamozosin.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/37217902873.pdfIn PDF document text
    • http://blue-balloon.pl/files/files/25394330959.pdfIn PDF document text
    • http://www.ak-kresy.pl/newsysn/kcfinder/upload/files/jalatefij.pdfIn PDF document text
    • http://sdv.sk/userfiles/articles/file/vixepimivomi.pdfIn PDF document text
    • http://entwuerfe.premo.at/userfiles/file/16795951524.pdfIn PDF document text
    • https://www.3zslitomysl.cz/admin/editor/kcfinder/upload/files/xagejezutiwa.pdfIn PDF document text
    • https://guijek.com/userfiles/file/nefamifad.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/logel.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/mowiparifixamotanemuvutal.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/jikux.pdfIn PDF document text
    • https://affordans.com/ckfinder/userfiles/files/lakuzob.pdfIn PDF document text
    • https://femagnet.com/upload/edu/article/file/jojoxukowamimunimapet.pdfIn PDF document text
    • http://akgwealthplanner.com/crm/files/tunasewapi.pdfIn PDF document text
    • http://gopherandsquirrelcontrol.com/admin/images/file/1535533814.pdfIn PDF document text
    • http://tiquital.com/documentos/file/57025521291.pdfIn PDF document text
    • http://elsped.hu/files/file/98336455713.pdfIn PDF document text
    • http://www.ddu-hk.cz/ckfinder/userfiles/files/wunubavugana.pdfIn PDF document text
    • http://elektromig.pl/userfiles/file/66922074697.pdfIn PDF document text
    • http://air-ned.com/uploads/files/14109741646.pdfIn PDF document text
    • https://cyberbirddog.com/userfiles/files/vowinafamunometabolupex.pdfIn PDF document text
    • http://nevacomposites.com/public/kcfinder/upload/files/foxekezedopademad.pdfIn PDF document text
    • http://servetgumrukleme.com/kcfinder/upload/files/80393503016.pdfIn PDF document text
    • https://bangvetthuong.com/luutru/files/mewewujazafupiwupurebeb.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_off000526ef.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000526ef.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000526ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x526EF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00053e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E0A 17728 bytes
SHA-256: 178c8a6e4f20dfe8f41c99b0c7b983e09e5d26da52aab5e5d592e1ab00c4bd6c
font_02_sfnt_off00056c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56C18 10700 bytes
SHA-256: 52b4df7436ae3a554f79e4250892f14fd82032cdc5623c89b315ed869ed61e3a