Malicious PDF — malware analysis report

Static analysis result for SHA-256 753e510775bc0469…

MALICIOUS

PDF

72.8 KB Created: 2021-02-09 19:08:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 7de174b5ef5955cfef670031f1bffbed SHA-1: e026daa390a46d35a185efce35873bbff632fdd2 SHA-256: 753e510775bc04690cae1ede5791df23761379bd770cd5d31ca92540cf8e8fa4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/aws?utm_term=addressing+modes+of+8085+microprocessor+pdf PDF link annotation
    • https://somokowu.weebly.com/uploads/1/3/1/3/131383604/3696335.pdfIn PDF document text
    • https://bovebonidufos.weebly.com/uploads/1/3/1/4/131483372/sorureraronokox-situbod-labapeforozezib-fixusupulasikos.pdfIn PDF document text
    • https://zelerajolames.weebly.com/uploads/1/3/0/7/130776056/66d12d2.pdfIn PDF document text
    • http://vseti.life/64424818863spp1c.pdfIn PDF document text
    • https://pasojifet.weebly.com/uploads/1/3/0/7/130776368/f219bc80.pdfIn PDF document text
    • http://tozepefaj.iblogger.org/fulexu.pdfIn PDF document text
    • http://cozyplacefor.rest/gumagujvbv6x.pdfIn PDF document text
    • http://gnatural.space/import_spreadsheet_to_google_maps4e5b6.pdfIn PDF document text
    • https://nelajelax.weebly.com/uploads/1/3/2/7/132712676/zusazi_zenepekinad_kagume.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/iudgjt1/best_free_vr_horror_games_on_steam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454180/normal_5fe79495555dc.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/93853479451.pdfIn PDF document text
    • https://fetatoba.weebly.com/uploads/1/3/4/6/134689412/ramim-puwijarejo-mibidagugiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luvibiw.epizy.com/carry_in_jatta_2_free.pdfIn PDF document text
    • http://fesamemosonug.rf.gd/56746852231.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_off0000deb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB7 5680 bytes
SHA-256: 6cc88f05f127e0d2bcf4feaabd81d492a1155b1f9477e5b09bdf4a4499161e4b
font_01_sfnt_off0000f20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20C 10684 bytes
SHA-256: 0c0961f9e5e0aed993057e880bf198b9160dde8209a8139a9efdc8fd16be5944