Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b71ee6e48085eca…

MALICIOUS

PDF

65.6 KB Created: 2021-02-18 03:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7365fb6fe3ed0b79859303d1fd0ddf14 SHA-1: 65c689ebda9e0dda068aa80e93ec249bde151cc4 SHA-256: 9b71ee6e48085eca79377f9b93924f27af10f85e538e46db2acfbe7be6f826cb
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=car+washer+manual+pump In PDF document text
    • https://static.s123-cdn-static.com/uploads/4413125/normal_5fdf0f99edb5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465705/normal_5fdddc4f339d4.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/gedibudarugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479715/normal_6024af71151ce.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/ieLgigg/bubozegodamevukaxirazu.pdfIn PDF document text
    • https://cdn.sqhk.co/fixefalid/C1ieRRi/duviwodojaxavufu.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/vTbjda6/12967724269.pdfIn PDF document text
    • http://moreprodukti.com/patazerezadam7mnjr.pdfIn PDF document text
    • http://dodabefokibejo.22web.org/guess_the_brand_answers_level_119.pdfIn PDF document text
    • http://zoziwasikow.22web.org/20318976949.pdfIn PDF document text
    • https://cdn.sqhk.co/rapenikidu/Zvkiajg/xizefasawegedobawakeki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464541/normal_602186bb03999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390382/normal_60104c4219dd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472186/normal_5ff2f0cb16bd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445119/normal_602b85b3cade1.pdfIn PDF document text
    • http://storefromit.pro/98649347063i36wf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_601b4517520bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_600e05a6454dc.pdfIn PDF document text
    • http://igafnd.org/camerafi_live_mod_apkw96yc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zujitix.epizy.com/carrom_game_free_for_android.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_off0000c55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55A 5056 bytes
SHA-256: 9f66cba85b3f96aee65ec1078f54c6a6eaa1d458ba16d78abcfebe28af81b0e6
font_01_sfnt_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 10136 bytes
SHA-256: 8152259e19ee609ccd3b1501b86cd1c601ad12b833c40dd77fb8c84513835f0d

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