Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c7b9dbed15243d…

MALICIOUS

PDF

82.9 KB Created: 2021-08-18 19:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: 76eac53e3ad80267b3392445fae756d1 SHA-1: 0bc79acb000b66d12adfce6e2bafb88b218a1712 SHA-256: c0c7b9dbed15243da4daa2a135083fb4ca66595da3843054f48c8efb2dcf8811
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • 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 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://deltools.com/userfiles/file/jadowotilow.pdf In PDF document text
    • http://laihoawedding.com/app/webroot/upload/files/bonexofovenotowipe.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607bab4f48e51---palazusobi.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/vunagane.pdfIn PDF document text
    • http://princeverma.in/uploads/files/tokeginapigiwaxugojasi.pdfIn PDF document text
    • http://dominoliberec.eu/images/file/files/77717927100.pdfIn PDF document text
    • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/mekiwuw.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/laxekuxunapu.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/6uqc0tui5162qmo0u91hv47ald/39939263454.pdfIn PDF document text
    • https://designclarf.it/file/pivejosutar.pdfIn PDF document text
    • http://1parareunion-club.com/clients/4/48/482fc251494624b09083a87f212a12d7/File/buxejujomotolojabotunefi.pdfIn PDF document text
    • http://cameralehiep.com/hinhanh_fckeditor/file/bunozitexipezumago.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/suzurike.pdfIn PDF document text
    • http://zatoodesign.com/userfiles/files/zigav.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082037c9b705---pufuliwamakabonidubefe.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/digenek.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/12170840750.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///33333906163.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/83882708673.pdfIn PDF document text
    • https://baigiangtoanhoc.com/upload/files/96828207745.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/52105359584.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607acaf648a0e---28298460630.pdfIn PDF document text
    • http://veterinariogiardinelli.it/userfiles/files/xaloxedu.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/e590ea108f235718c2b36ddaaffe3954/nopijatojaguzu.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/78198664009.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=free+printable+syllable+worksheets+for+2nd+gradePDF link annotation
    • 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_off0000e076.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e076.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE076 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF888 16536 bytes
SHA-256: 4fceba497188d2ffdef7ce19f3e2f2c29f2752136047c9cd92426783ca1cb04c
font_02_sfnt_off0001237a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237A 11308 bytes
SHA-256: 5bd0b330f59bf75306313c55a1dbfe12c39eb498b43c3f1bd260af66e839f094