Malicious PDF — malware analysis report

Static analysis result for SHA-256 07557975674e7cbe…

MALICIOUS

PDF

62.2 KB Created: 2021-02-18 21:42:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 38425c754b8191852cc3c72607a9aa6e SHA-1: f146ce4249fb36c8e3bc5be3025ae3bc4f50f88d SHA-256: 07557975674e7cbe311c65f484e075199f71a87ed43f4b28b212b2e664d4d4fd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=i+say+yes+my+lord+song+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478664/normal_6018843686060.pdfIn PDF document text
    • https://ralanuda.weebly.com/uploads/1/3/0/7/130775203/aa9b16ddf17b4dc.pdfIn PDF document text
    • https://tawozajoruje.weebly.com/uploads/1/3/4/3/134314125/777900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494657/normal_602383d62c918.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481058/normal_5ff55696effb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373797/normal_600cf3e5696e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452173/normal_60084ff2d3a88.pdfIn PDF document text
    • https://kofovozeregom.weebly.com/uploads/1/3/4/3/134313602/7b5ec49801c5.pdfIn PDF document text
    • http://jebewif.22web.org/34844241884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459640/normal_60279ea47fe17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467007/normal_602ad0ce220a6.pdfIn PDF document text
    • http://everydays.space/507040131678gyd4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lexireto.epizy.com/font_asset_not_found_android.pdfIn PDF document text
    • http://lituvatitibew.epizy.com/app_store_optimization_book.pdfIn PDF document text
    • http://lirufuti.epizy.com/worker_welfare_policy_template.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_off0000b691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB691 5296 bytes
SHA-256: 533b21e42d7192fe1e36519a7c92f3e1ebbc64255b459a1f85032a0757a602a8
font_01_sfnt_off0000c887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC887 9960 bytes
SHA-256: 03e718e73e408bbc8b049652f7560987b6cf3f8048356f82bea5048ebd52ce23