Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ba3dd6cb67c42c…

MALICIOUS

PDF

68.8 KB Created: 2021-02-21 12:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 27d0a646559d7ca3f8df00652aeb0327 SHA-1: 8758c200561301bb011ae9ecae28518beded000f SHA-256: 99ba3dd6cb67c42c65736226a3aa29b0f7e2ee70b9f635ffa6252803d4d310e2
126 Risk Score

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/wb?keyword=ezdrummer%202%20file%20size PDF link annotation
    • http://segwaywheelchair.ru/how_to_use_prestige_oven_thermometer_probeq98zv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408879/normal_5ff9ac505c4e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415519/normal_5fee62f7c3f74.pdfIn PDF document text
    • http://graatorama.fun/englishforeveryone.org_answer_key_subordinating_conjunctionsvt5m1.pdfIn PDF document text
    • http://reduslim-shop.site/hp_laserjet_p2015_driver_download07he3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_602a3f7405d81.pdfIn PDF document text
    • http://thefortykuti.com/4911470884999y74.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/fcgThb5/slice_of_life_sims_4_height.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405185/normal_5fe5ea9cb784c.pdfIn PDF document text
    • https://cdn.sqhk.co/ledirevobep/aCibrhj/darkest_dungeon_can_you_see_traps.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xajojunedaxuda.epizy.com/dirobe.pdfIn PDF document text
    • http://sosefamip.epizy.com/bmj_case_reports_impact_factor_2015.pdfIn PDF document text
    • http://danokob.epizy.com/senior_manager_financial_reporting_job_description.pdfIn PDF document text
    • http://rofiratak.rf.gd/2d_shapes_worksheets_ks1.pdfIn PDF document text
    • http://kirigawegugava.epizy.com/thiruvilayadal_aarambam_songs_in_masstamilan.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_off0000d36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36B 4984 bytes
SHA-256: 96bfef30109e3558628aae18938bacd1e6f5da1b527ebf2d5c2144a94b46bd2c
font_01_sfnt_off0000e454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE454 9980 bytes
SHA-256: dcfaf63b379d7495a8eed4e09a097b2e038f0ca617ccbe9c9d9c002805661d49