Malicious PDF — malware analysis report

Static analysis result for SHA-256 25813c2b1b51b0e2…

MALICIOUS

PDF

260.9 KB Created: 2022-01-17 05:52:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: e8748a384b51c8d05a9c32aa1d8d7bbb SHA-1: 31eed903a4a53f97457a9f1d64d11c5c5978eee3 SHA-256: 25813c2b1b51b0e2c954ad9a675c59f3b73147379e76d6bd71681099be6df6f3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than 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.
  • 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://allytemp.ru/uplcv?utm_term=html+email+signature+template+responsive In PDF document text
    • https://computerzone.pk/file/ziripagotorabil.pdfIn PDF document text
    • http://honeycontacts.com/uploades/userfiles/file/dofujuzowosematala.pdfIn PDF document text
    • http://geshome.co.jp/cmsdesigner/kcfinder/upload/files/23711915206.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b7fb91dc2df---31663425809.pdfIn PDF document text
    • http://webursitet.org/Files/file/reruwutunepubasiguwod.pdfIn PDF document text
    • https://0924055971.com/uploads/files/202111021553367622.pdfIn PDF document text
    • http://ez-surveying.com/htdocs/cljr/data/files/vazojifemodabesafugumetaw.pdfIn PDF document text
    • http://nanobubblevietnam.com/uploads/userfiles/file/25706769652.pdfIn PDF document text
    • http://cesnek-vysocina.cz/UserFiles/File/92045380356.pdfIn PDF document text
    • https://vigilanciaweb.cl/dinamicos/files/file/78587263562.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/nurugarepur.pdfIn PDF document text
    • http://pacemakerpressintl.com/uploads/assets/file/dugag.pdfIn PDF document text
    • https://mgs-on-track.com/app/webroot/userfiles/file/dubixune.pdfIn PDF document text
    • http://phuvuongcorp.com/luutru/files/94482214730.pdfIn PDF document text
    • https://foodvellythailand.com/upload/files/10469304016.pdfIn PDF document text
    • https://davidfoleyinc.com/userfiles/file/xoliwezaregoferalavutesof.pdfIn PDF document text
    • https://jagamimpi.com/contents/files/xadojerajunisewalox.pdfIn PDF document text
    • http://www.scsk12.org/policy/files/files/kedezitubebevi.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/zufifezu.pdfIn PDF document text
    • http://kidsjeodo.com/images/files/30296715509.pdfIn PDF document text
    • http://vsevolozhsk.mebel18.com/uploads/files/46638410163.pdfIn PDF document text
    • http://eot.mn/uploads/userfiles/files/vurilutifef.pdfIn PDF document text
    • https://ebmcordelles.progess.com/userfiles/file/dumajuveniterinedutoj.pdfIn PDF document text
    • https://www.centralleiloes.com.br/admincentral/ckeditor/kcfinder/upload/files/virudupokogiguti.pdfIn PDF document text
    • http://deborahkay.com/ckfinder/userfiles/files/mixixadakuwisube.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_off0003a242.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003a242.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003a242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A242 10752 bytes
SHA-256: d4a5c309d385aef9d87036cdd41061e7a0f924c2caab9df1a77c8aeb87c7aba3
font_01_sfnt_off0003baeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BAEB 19232 bytes
SHA-256: e54b2fa078d48ee1556ee15d8fbb813aa770a46fd5ffd6f9518a6f11dd63cc3e
font_02_sfnt_off0003edb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EDB9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336