Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28ceab0f013725…

MALICIOUS

PDF

253.5 KB Created: 2022-03-29 14:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: a145d6b3aa7da7bface9d2a7977b080d SHA-1: 92256bf85c6fe78f4dc3d726fcd9e3d0013d664b SHA-256: af28ceab0f0137257639823657f82f4483fe918d4689e420429cfc60509bd1da
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7707

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=pentagono+hexagono+heptagono+octagon PDF link annotation
    • https://suleduzon.weebly.com/uploads/1/3/4/4/134403341/xerevod.pdfIn PDF document text
    • https://judikudaxu.weebly.com/uploads/1/3/4/8/134878276/fejowurupabavizexiga.pdfIn PDF document text
    • https://pejizaki.weebly.com/uploads/1/3/1/4/131437091/9032737.pdfIn PDF document text
    • https://visigeporoxibus.weebly.com/uploads/1/3/4/1/134131572/gezolofoti.pdfIn PDF document text
    • https://sotubuponin.weebly.com/uploads/1/3/4/6/134644868/7266305d3.pdfIn PDF document text
    • https://jebezowurexa.weebly.com/uploads/1/3/4/5/134576847/4683224.pdfIn PDF document text
    • https://suwutijotelites.weebly.com/uploads/1/3/6/0/136083726/vojoniz-roditakom.pdfIn PDF document text
    • https://ruwelijowabol.weebly.com/uploads/1/3/4/3/134307429/2813245.pdfIn PDF document text
    • https://tanatomunedasov.weebly.com/uploads/1/3/5/3/135325499/sexawuvokopa.pdfIn PDF document text
    • http://retete.pentrugatit.ro/userfiles/file/99584073003.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16207053b7b4ea---zomazuxu.pdfIn PDF document text
    • http://primesystem.kz/app/webroot/js/kcfinder/upload/files/jatukawiwiluredatitoseji.pdfIn PDF document text
    • https://rebigakudaj.weebly.com/uploads/1/3/1/3/131383708/6486ba85c983e64.pdfIn PDF document text
    • https://darurirajilubi.weebly.com/uploads/1/3/4/3/134318819/mejizunu.pdfIn PDF document text
    • https://jabasamivesapev.weebly.com/uploads/1/3/4/0/134041177/fefidonulirijul.pdfIn PDF document text
    • https://mysilo.com/upload/ckfinder/files/mokuf.pdfIn PDF document text
    • https://zudepiguzow.weebly.com/uploads/1/3/4/7/134774383/pojapuzavelo_xodoxojekexob_vukel.pdfIn PDF document text
    • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/60863395735.pdfIn PDF document text
    • https://nivasotum.weebly.com/uploads/1/3/5/9/135991747/nidevevuvida.pdfIn PDF document text
    • https://wupixizot.weebly.com/uploads/1/3/5/3/135398135/28ecd18.pdfIn PDF document text
    • http://dade666.com/userfiles/202203file/2022032119221470554.pdfIn PDF document text
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/bokosovugopaj.pdfIn PDF document text
    • https://xugeguva.weebly.com/uploads/1/3/1/4/131438310/55c74167a512.pdfIn PDF document text
    • https://womovenurobo.weebly.com/uploads/1/3/1/8/131872055/09b494b.pdfIn PDF document text
    • https://sifelinapekaw.weebly.com/uploads/1/3/1/6/131637019/venitibiziwu.pdfIn PDF document text
    • https://bowejobopuzepu.weebly.com/uploads/1/3/1/4/131406154/3289313.pdfIn PDF document text
    • https://xijiruxexewige.weebly.com/uploads/1/3/4/7/134725886/5595918.pdfIn PDF document text
    • https://wodopirabut.weebly.com/uploads/1/3/4/4/134468360/zamavosituv.pdfIn PDF document text
    • https://lemoximut.weebly.com/uploads/1/3/7/5/137516849/nenenuvifefafa.pdfIn PDF document text
    • http://sbcnepal.com/images/file/91636293321.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00038a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38A4B 17656 bytes
SHA-256: 7d49a07e6cc89339f887b1a168335f3947196aaf9b5198b1e5d57a315f0adc66
font_01_sfnt_off0003b85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B85E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003cf7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CF7E 10348 bytes
SHA-256: 215e3610589ca1d0c92ea0dec41fd80b28ceeed28c2fe8bf11fce4387fd34b02