Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffcf0941580f487…

MALICIOUS

PDF

67.9 KB Created: 2021-02-17 04:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1a14dc0592bf2a9b2a9a4745e7cea2c5 SHA-1: 82fbd47d704a5b7a592c5e284e29780e086f9d78 SHA-256: 0ffcf0941580f487d6e260015a3f71d305433c7d41a25dad5ecc34447d0fb54d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://leonvi.ru/wix?keyword=epson+artisan+1430+inkjet+printer+ink PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374369/normal_5fd34e4cbaaad.pdfIn PDF document text
    • http://nekretnine.site/892206231344gd1j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419640/normal_5fe8681ea27e0.pdfIn PDF document text
    • http://sofoviwov.iblogger.org/difodufizuturowetugogat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476282/normal_601cb30839248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_601384ecd953d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475995/normal_5fd0f739c2c84.pdfIn PDF document text
    • http://meetplafond.xyz/new_catholic_mass_responses3s7a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vukumesoj/5953402940.pdfIn PDF document text
    • http://puvuwanixos.rf.gd/marketing_campaign_powerpoint_template_free.pdfIn PDF document text
    • http://jejesufunaderuv.rf.gd/fobelotatavoso.pdfIn PDF document text
    • http://nepopujadulipid.epizy.com/8953733319.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/bawenozagaposanupasibolu.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/weguzajajubifepazimajin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC7 5112 bytes
SHA-256: ce798bc1114d92c69951f435d1c68a32b42d7c1c1f857656849e4986f49fbb92
font_01_sfnt_off0000d136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD136 10280 bytes
SHA-256: 86eb21cd8a5cc7e313b9025a925b84f9ac6ac7358aef2d1dc3e807d09ffc7e41
font_02_sfnt_off0000f48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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