Malicious PDF — malware analysis report

Static analysis result for SHA-256 117f9db299963505…

MALICIOUS

PDF

67.7 KB Created: 2021-02-25 13:56:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5528509ffdcb8b96924244bed07d58d0 SHA-1: 7ee145789395a8e050d3882c117e0146ee4d8d5c SHA-256: 117f9db299963505272d71241920c535a48db022c9d9f9304e8f08dfb2eee99b
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://seumenha.ru/wix?keyword=types+of+levers+worksheet+physical+science PDF link annotation
    • https://wewodagib.weebly.com/uploads/1/3/4/2/134266566/nuvigu-nezararoxix.pdfIn PDF document text
    • https://cdn.sqhk.co/towafeniruje/haiciau/29217999605.pdfIn PDF document text
    • https://gidelusibi.weebly.com/uploads/1/3/4/0/134040719/6072550.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/yejffV0/common_bacterial_infections_that_cause_diarrhea.pdfIn PDF document text
    • https://cdn.sqhk.co/lawikuto/igiidhd/37716304467.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/chfjbgc/81978352871.pdfIn PDF document text
    • https://famemizi.weebly.com/uploads/1/3/6/0/136006686/3d3af163e94.pdfIn PDF document text
    • http://topvideo.design/jesuzusurilkuug.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/dofuliwaj.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/ieyieji/92470235585.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/64605898956.pdfIn PDF document text
    • https://cdn.sqhk.co/kelulegawi/pogiXSJ/dobedovuxopib.pdfIn PDF document text
    • https://sijokazodile.weebly.com/uploads/1/3/1/4/131454207/8507146.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nabenejajoko.myartsonline.com/wolumasegazoresoropexod.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_off0000cd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD02 5372 bytes
SHA-256: 9a7ecec28c8571b90ff682e46e4011b789069b1196d15fb2ffa618e072717ee7
font_01_sfnt_off0000df63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF63 10008 bytes
SHA-256: 0bf8cb787e5e365195382013506683453a3095fbf18aabf85404dd8ec8bed35e

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