Malicious PDF — malware analysis report

Static analysis result for SHA-256 293f192767c41716…

MALICIOUS

PDF

86.0 KB Created: 2021-03-24 21:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fb60b6497bbb7257baed9b6f0ea0a6ad SHA-1: 50e6825dd463b3cb25b649d4a28c3407babc9650 SHA-256: 293f192767c41716162818afdba3f4ddabd4af4d6dcb9136cab0aba70ae3e24a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=emperor+of+the+fading+suns+mods PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368781/normal_5ff1f48c55e02.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/iiagchd/xobulika.pdfIn PDF document text
    • https://cdn.sqhk.co/xawesani/hgH5Fii/lafog.pdfIn PDF document text
    • http://wegoradubi.sportsontheweb.net/2611971198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_5fdb38040e8de.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/calendario_de_vacunacion_minsa_2020_peru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382779/normal_6042da6750dbf.pdfIn PDF document text
    • https://cdn.sqhk.co/xijisejes/xjiUORW/vekukure.pdfIn PDF document text
    • https://cdn.sqhk.co/runolisor/jbD0Vhc/idle_billionaire_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuwomu/hXBXWQx/ludo_all_star_online_classic_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/jgeggFk/17403190178.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/gdhiVak/19449530876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481540/normal_602d2d5de7370.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/ShiiaXn/app_lock_gallery_vault_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fusatogis/SCrFtid/september_2018_calendar_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458124/normal_604634f72d3f2.pdfIn PDF document text
    • https://cdn.sqhk.co/kekazorub/r5iemjb/kuxerevape.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosuvoz.epizy.com/art_gallery_management_system_project_report.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/fender_gb_hot_rod_deluxe_112_enclosure.pdfIn PDF document text
    • http://xobagoxefe.rf.gd/install_hp_laserjet_p1102w_on_mac.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11496 5380 bytes
SHA-256: cd92b187ac9a9c845b7b9ae9dfa70acf37ed8d41e28b86da8442a380950032d6
font_01_sfnt_off000126be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126BE 10764 bytes
SHA-256: ff095611e1ae94b81cb849bab5e03d1bf5409b2a409e2b9885ea797233f30ac5

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