Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4dd1535ce07d80b…

MALICIOUS

PDF

72.7 KB Created: 2021-02-11 07:10:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2448d5119816a990fd7404561dd68ba0 SHA-1: 9e9d65e6bc6ae93323eb8c1bd15be60b152acd40 SHA-256: f4dd1535ce07d80b6bcff03bd51373ac31c1289130c63a98a6710879702fa035
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/123?utm_term=womens+shiny+bodysuits PDF link annotation
    • https://cdn.sqhk.co/fabadipub/jahgbIa/94984006121.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/yhb2BGT/hex_wars_hacked.pdfIn PDF document text
    • http://soluzixod.66ghz.com/90508811262.pdfIn PDF document text
    • https://veraxoli.weebly.com/uploads/1/3/4/0/134040716/afd9b83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385863/normal_6012e70eb323d.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/hheXQgg/rekisonasesekovefekox.pdfIn PDF document text
    • https://varozowixofifop.weebly.com/uploads/1/3/0/8/130814066/5631621.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/cdyPbji/marketing_plan_in_a_business_plan_example.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416125/normal_5fd39346e2cbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383797/normal_60174ed9b4093.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/haQsJhb/photo_editor_change_background_color_online.pdfIn PDF document text
    • https://doxibizogo.weebly.com/uploads/1/3/4/8/134893922/zizivibanupulape.pdfIn PDF document text
    • https://gamepasak.weebly.com/uploads/1/3/4/1/134109087/vimunasajixuwudemep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383475/normal_5ff06c7324d8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481420/normal_601637a009a60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pukafenofi.epizy.com/rumovapafuxufirizawomogi.pdfIn PDF document text
    • http://mosararivifu.rf.gd/computer_application_software_free.pdfIn PDF document text
    • http://pekuruzaxi.epizy.com/roblox_shirt_template_transparent_background.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_off0000e026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE026 4984 bytes
SHA-256: f5245484265306004c654293bfdf98efbeae2d341bf3c273adf106ecdd87411b
font_01_sfnt_off0000f108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF108 10892 bytes
SHA-256: 47f0c0b3ed211585480336ec65fad167c3958db4094b7d3ef3ea3d4285bd1bdb

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