Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2be5de95a1f3889…

MALICIOUS

PDF

70.6 KB Created: 2021-02-09 09:55:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6b72bb2a72b1c344546f37b4ffb45956 SHA-1: 13289fecb3728a60e7dd4ce28ebf5a7c319eabfc SHA-256: a2be5de95a1f38893fc543dfff51f3422297cf8f4fe24a3916dadff8bf67dd9f
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://baarspo.ru/wb?keyword=bowman%20lake%20ca%20fishing%20report PDF link annotation
    • https://nakalefa.weebly.com/uploads/1/3/4/5/134522788/terugesog.pdfIn PDF document text
    • http://ndfnasg.xyz/xokifokugapemux4wsz.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/9adba.pdfIn PDF document text
    • https://gopogusefivow.weebly.com/uploads/1/3/1/4/131406686/10c8ebb38.pdfIn PDF document text
    • https://kilexudu.weebly.com/uploads/1/3/5/3/135347894/1193642.pdfIn PDF document text
    • https://penabapemuzoji.weebly.com/uploads/1/3/1/4/131453208/gamimatumiboxe-sinig-sopironifez-nedakubala.pdfIn PDF document text
    • https://fupefomaxoxaje.weebly.com/uploads/1/3/4/8/134897629/gutoluba_wefuragal_nokevurid.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/ifiiVhc/nes._emu_android_apk_download.pdfIn PDF document text
    • https://gutamigev.weebly.com/uploads/1/3/1/1/131163772/gegokewomevu.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunagakiz/iIhchA9/xaxex.pdfIn PDF document text
    • http://1xbet-football.fun/zivaxomixesuduwepofjo5to.pdfIn PDF document text
    • http://ibkreactiva2020.com/flower_of_scotland_clarinet_sheet_music1e17t.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/baxunaf/codashop_pro_apk_pure.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/38319184836.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/copernic_desktop_search_4.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_off0000d5a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A4 5636 bytes
SHA-256: e54b15ad3febf7632c6277e67df7657e1530c06e7285334e42d8650ba5b8cf73
font_01_sfnt_off0000e8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 10884 bytes
SHA-256: c41895b8fdde85d00ddead01730b3204a2446e15456d8f876af02d33d9eb1827