Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edaa9476028fdbe…

MALICIOUS

PDF

76.5 KB Created: 2021-02-10 09:46:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 75989d8facf855f6caf6657670d2e3bd SHA-1: b59c808a19282898f0a863b0ea59708690e19cd4 SHA-256: 8edaa9476028fdbefa5a2793dd298705cd02e925b654a9b71b5a5add71a5d4ee
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wb?keyword=free%20kjv%20bible%20apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4505687/normal_5fdedb71d5eb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388619/normal_60224f8eb79b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_601ae0df299d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387573/normal_6000b281a8172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_600f02f10e053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464068/normal_5fd32422ad3cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426679/normal_5fcbbfc242527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495244/normal_600f4944f37c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444636/normal_6001219f798a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465935/normal_5fc8d2d8c5469.pdfIn PDF document text
    • https://voliguxuzewiwa.weebly.com/uploads/1/3/4/7/134762967/gorimeza-pibojubetogixik.pdfIn PDF document text
    • https://pewidujatiw.weebly.com/uploads/1/3/1/3/131381722/4596604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366385/normal_600816db54c1c.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/tobaziw/out_of_office_message_template_business_trip.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/ledapewixaredowipuni.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_off0000edb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB6 4932 bytes
SHA-256: ede8827d0179b01d19706866bfaceef0b898f4d18c3cb4c68ef136a0409c15b3
font_01_sfnt_off0000fe99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE99 11324 bytes
SHA-256: c2118fdbda50d7dd71677ea17b10d5251cd9f3bea10de575dc4d2827673d0c39

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