Malicious PDF — malware analysis report

Static analysis result for SHA-256 877c49dc28263f05…

MALICIOUS

PDF

87.9 KB Created: 2021-06-26 05:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: db998368fc4c62c38260ed744d951e09 SHA-1: 676f6ca4310f228de9822e39ceacbb25ec0e16ed SHA-256: 877c49dc28263f059cfb5b66553dc942130601e376e7c7fe74b2d27b12d850af
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of a link farm pointing to compromised WordPress upload directories suggests an attempt to redirect users to malicious or phishing content. The ML classifier also returned a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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 https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/0c9f83dcdfd050d8c7a5ae907024b7fb/90073639495.pdf In PDF document text
    • http://preserveproperties.com/userfiles/files/gipumuzerizugetezusinak.pdfIn PDF document text
    • http://www.serenissimaservizi.com//files/risefaretinanetebiv.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160a471f235ce3---51100118377.pdfIn PDF document text
    • https://10glazsikeyrosa.ru/file/35793647885.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160892ae90b0dc---mugazuxexopa.pdfIn PDF document text
    • http://re-view.online/fckFiles/file/54475805761.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/24565068900.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160acec458ac99---39764606219.pdfIn PDF document text
    • https://areicon.com/images/file/zefovozupevulenudedodunon.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/11915443715.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/b7b27616fb0508bed8d1aef0e1759147/dizugozuxigomigofitalelo.pdfIn PDF document text
    • https://talleresimad.com/images/subidas/files/migojetozezefam.pdfIn PDF document text
    • https://argumentua.com/i/file/nevanibirapukupojisix.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/dtcbld8kh1s9amc99ia65o5hs2/vaxuf.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16086003f3d996---92526299306.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/9f64ee7f22903639a73263cc953eb8ee/80978584143.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/118f13c2a1106f69a96a68e6191effdb/23757354728.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a0950e7d046---lataxopasizi.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c5de42d80a2---96512116461.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/6b0ibgoe2a6n6m3933f8f9qf8f1oqfha/jugeno.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c0bce25f2---tunavapu.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160abe8c4ea128---58074798763.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=the+best+fortnite+clan+namesPDF 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 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_off0000f431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF431 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C48 10704 bytes
SHA-256: d2e36b0f41857135f1a01b3c6fb7fddfaeb61ebd11de0399783ad8600a75968b
font_02_sfnt_off000124a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A4 17432 bytes
SHA-256: 5f9ceaf3fa9555c5c180b6ec8725ffe16fbefb59038e0f1f187bd31ea74defee

Open this report in the interactive analyzer, or submit your own file for analysis.