Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8f8ef815fa8c9c…

MALICIOUS

PDF

89.8 KB Created: 2022-04-14 08:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 570aac9b137f000a0a6af0ca840e9954 SHA-1: 7cac751009739ef6972d71b0833ad5a417683cbc SHA-256: cb8f8ef815fa8c9c89e5b499515bdc006d2453cae4b69dc1a8164a078f1fc8bb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 https://loheb.co.za/YmrXLWy8?keyword=dark%20souls%203%20guia%20de%20zonas PDF link annotation
    • http://albertopizzetti.it/userfiles/files/zenirufunof.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16252bc6a16e0a---figanomi.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/90556447390.pdfIn PDF document text
    • https://xubebivox.weebly.com/uploads/1/3/5/3/135392957/1cdc6c8.pdfIn PDF document text
    • http://eszixv.hu/ckfinder/userfiles/files/53116205149.pdfIn PDF document text
    • http://labemweller.medianet-shop.de/userfiles/editor_files/file/tikadizigepebe.pdfIn PDF document text
    • https://jimedugevebuz.weebly.com/uploads/1/3/4/4/134437071/64674c0a48be3f7.pdfIn PDF document text
    • https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/53b301.pdfIn PDF document text
    • https://xn--80aujdnb8a.xn--p1ai/kcfinder/upload/files/47230177643.pdfIn PDF document text
    • https://shinko-tw.com/UserFiles/file/xexekapewitonarinajobakel.pdfIn PDF document text
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/38295094326.pdfIn PDF document text
    • https://tibuvaji.weebly.com/uploads/1/3/4/7/134720571/6564739.pdfIn PDF document text
    • https://dixotusokor.weebly.com/uploads/1/3/0/9/130968976/6b7f8e18.pdfIn PDF document text
    • https://tkbhanna.com/ckfinder/userfiles/files/68634097604.pdfIn PDF document text
    • http://hkacca.com/userfiles/vurepexagox.pdfIn PDF document text
    • https://alkoplast.rs/files/28560168304.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/7575302962.pdfIn PDF document text
    • http://dhs-bank-sample.com/app/webroot/js/kcfinder/upload/files/xurabezonasu.pdfIn PDF document text
    • https://norabemomo.weebly.com/uploads/1/3/0/9/130969424/xepuvugemowalix.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16200c2ef39dd6---nagovilipuvidux.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_off0000f98e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000f98e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98E 18092 bytes
SHA-256: 956a770adba09bcf5a3d4cb2bdb8ed7a6cd977c7f3e7a284e79f62b6e41639ac
font_01_sfnt_off000127bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD6 10748 bytes
SHA-256: d2dbd2b9cb4736d9c1f8504a2b2242a2f8f6627bf0234a996f765c564a7d323e