Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5617e3d0a71ac17…

MALICIOUS

PDF

72.6 KB Created: 2021-01-15 12:28:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 1f76518bcec5a6a2e5577ad3e36649fb SHA-1: c511bd56e3948f78a3a246637a4d9003756ceeac SHA-256: b5617e3d0a71ac174998df8bd59a154a8f707ab1d31697632c9322226e4d5add
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=ca+dmv+sr1+form+online In PDF document text
    • https://puxodemidumez.weebly.com/uploads/1/3/5/3/135345879/lipodiran.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403937/normal_5fbeedbbe1e59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_5fa579c02d8f1.pdfIn PDF document text
    • https://site-1174686.mozfiles.com/files/1174686/81264286193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8751e8c190e.pdfIn PDF document text
    • https://lukazerud.weebly.com/uploads/1/3/4/3/134343231/lezagunuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388424/normal_5fa22733b6f28.pdfIn PDF document text
    • https://site-1233583.mozfiles.com/files/1233583/classic_wow_tailoring_guide_leveling.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/gomomawuvasakoxumuz.pdfIn PDF document text
    • https://site-1177942.mozfiles.com/files/1177942/azamara_pursuit_deck_7_plan.pdfIn PDF document text
    • https://nosovaranipad.weebly.com/uploads/1/3/4/7/134743093/pomodiv_gofedex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_6000d704a161f.pdfIn PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/27a098f0a370.pdfIn PDF document text
    • https://site-1201164.mozfiles.com/files/1201164/2411126868.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/fc34856e.pdfIn PDF document text
    • https://sasominafa.weebly.com/uploads/1/3/4/3/134362810/03ece8f.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/vukujidor/bezusenepixejedu.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/50960726748.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_off0000de4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4A 5072 bytes
SHA-256: afde20efd390b8fc299e8a5b617816afb36120280d9fb52a49c732c1d0e24536
font_01_sfnt_off0000ef7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7C 11276 bytes
SHA-256: 78b0f6fe374588b8c17b71f9f5000c2e8f635a0d3f27df57b3a70380c934aa5a

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