Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0db5c1ad5c763f…

MALICIOUS

PDF

81.1 KB Created: 2021-02-27 12:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 497fa03f0d784f4143e923db321ba3c4 SHA-1: 307900fd672b38678cb3d98e3ae71f5325f12d91 SHA-256: dc0db5c1ad5c763ffab8a3c3b7cdda13c8ac43b5e9b14e16718335019b0d4354
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a primary external URI pointing to a suspicious domain associated with keyword-based redirection. Heuristics indicate this PDF functions as a link farm hosted on disposable infrastructure, designed to funnel users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=curve+fever+unblocked+games PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366397/normal_5fff7983697d0.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/eiajjRi/ortel_mobile_tarif_andern.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5ff34752bd83b.pdfIn PDF document text
    • https://cdn.sqhk.co/xonudutixova/eihCJjY/xovir.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/bEFjhji/final_fantasy_xiv_free_trial_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/pidagasew/h2jdihb/30th_birthday_party_decoration_ideas_for_her.pdfIn PDF document text
    • https://cdn.sqhk.co/sanojuxako/jjicXtr/roblox_free_robux_please.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366965/normal_600299f9d119d.pdfIn PDF document text
    • http://vewedomodisex.22web.org/music_sheet_notes_names.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373522/normal_60035ee2df8d5.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/rgdiigi/wedding_pound_cake_recipes_from_scratch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404975/normal_601905e3ebc46.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuxime/air_pollution_control_fact_sheet.pdfIn PDF document text
    • http://wogulixa.epizy.com/free_break_and_lunch_schedule_template.pdfIn PDF document text
    • http://zelusovudexa.rf.gd/checklist_performance_appraisal.pdfIn PDF document text
    • http://mowowaruxuxizim.rf.gd/garmin_nuvi_55lmt_map_update.pdfIn PDF document text
    • http://kirotomi.epizy.com/information_report_ideas_year_3.pdfIn PDF document text
    • http://pamilov.epizy.com/good_night_wishes_gif_images.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_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 5508 bytes
SHA-256: 3bff65541a51b1566c3a8a492d96087fc8c28111f2aa62b14c9b79cae39a2fe9
font_01_sfnt_off00010bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFE 13576 bytes
SHA-256: 5873772b2d8770bd2a5f60df87e10ae2bfaac301d931ba723a3dab1f85986094

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