Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27e7d021ecca31a…

MALICIOUS

PDF

78.8 KB Created: 2021-03-04 08:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f8379d2de4021b8f553e46f906acf4db SHA-1: fbdc2507d68c2b38c14b679d93df90fef4dede6f SHA-256: f27e7d021ecca31a72dcfb9f3d4f8c036b6690420fa8e4c64a709b9a1552d044
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://midufefew.ru/wb?keyword=williams%20sonoma%20bread%20machine%20manual PDF link annotation
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/limuzabenu.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/Dih7pdI/xufupubonesagowitum.pdfIn PDF document text
    • https://limulepaxot.weebly.com/uploads/1/3/1/3/131379958/3ac43b2f21.pdfIn PDF document text
    • https://komijeji.weebly.com/uploads/1/3/1/6/131606126/4175781.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465396/normal_600149fbdcf59.pdfIn PDF document text
    • https://nonejekorozu.weebly.com/uploads/1/3/4/1/134108542/6748202.pdfIn PDF document text
    • https://wanezevidika.weebly.com/uploads/1/3/4/5/134588498/c6a601836b82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5fed773e2d2da.pdfIn PDF document text
    • http://dombitarf.ru/how_to_get_rid_of_poison_ivy_rash_quicklyk5t3a.pdfIn PDF document text
    • https://ranetaxute.weebly.com/uploads/1/3/4/8/134886021/3166279.pdfIn PDF document text
    • https://cdn.sqhk.co/gafazakedoki/bRsaiWs/final_fantasy_2_psp_world_map.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/agcVkCF/55284233970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385417/normal_602c5e9d436a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402717/normal_600e5bae537b1.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/bejikefowu/gezunuwotonufoboxusif.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_off0000f752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF752 5332 bytes
SHA-256: cf1d467e80b4a9771a66d751332852850259535de591c48f21a3decacd8d5756
font_01_sfnt_off0001094b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094B 11040 bytes
SHA-256: f67d32189765adfa88fcf44fd4124c75015414a0a509c009f943970aa8fadefa