Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2d8722fb1c3858…

MALICIOUS

PDF

69.0 KB Created: 2021-02-24 00:59:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a31e14afc2e161e56139c5b12dd9ac37 SHA-1: 4e148941878a100477e35efd4b33062441733f25 SHA-256: ec2d8722fb1c385802b6e1f6adfa98df4acefe71cecf27158ab9d1669eddef15
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://jacksth.ru/wix?keyword=sharp+aquos+42+tv+manual PDF link annotation
    • https://cdn.sqhk.co/dilizilozok/gh7hfRi/zaboluvofaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_602f117740baa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_6021d4f00957c.pdfIn PDF document text
    • https://zasawebisev.weebly.com/uploads/1/3/4/8/134865024/7627a3f69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475728/normal_5ff6c4550a784.pdfIn PDF document text
    • https://zewurutivuzaned.weebly.com/uploads/1/3/4/8/134888434/7170525.pdfIn PDF document text
    • https://jotulamopusojo.weebly.com/uploads/1/3/4/4/134465369/771eecf1d.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/Kjeiiid/business_insider_intelligence_influencer_marketing.pdfIn PDF document text
    • https://fiwigerisen.weebly.com/uploads/1/3/1/4/131408459/2717792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466413/normal_5fd8c0c146ea9.pdfIn PDF document text
    • https://lurevovikofa.weebly.com/uploads/1/3/4/6/134693735/4e0afee1eb450.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/leributafa/56443109926.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/star_wars_age_of_republic_villains_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/rirojuripaku.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_off0000c611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC611 5568 bytes
SHA-256: fffe7b486e59dd4ce31ae2a002fd057f34fba1606e7999a6dee79453e94ae555
font_01_sfnt_off0000d8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E8 14720 bytes
SHA-256: 37c55b90db4faac7b79ff42c189172d69ada20ed438af9d36ba87af6affa41d4