Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c32d3e8c7b6dbbb…

MALICIOUS

PDF

65.1 KB Created: 2021-02-25 22:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 16c833c6217ad2eb990ec8c595ee122c SHA-1: b14c3b66cf2f3c8b042cafd53b594bd16083aef1 SHA-256: 7c32d3e8c7b6dbbbc280ae39556a46567e1738a397a46aad6038d26825ad0726
224 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
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/award?keyword=run+for+your+life+midtown+charlotte In PDF document text
    • https://lofidebonejiniz.weebly.com/uploads/1/3/5/3/135334880/3308406.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxomawelej/AjjgzOU/zombie_objective_hackeado.pdfIn PDF document text
    • http://goodsun.space/5691599330297ut1.pdfIn PDF document text
    • http://medicalpracticementor.com/crv_car_reportct5hm.pdfIn PDF document text
    • http://powerhdniy.space/wusasodson6u.pdfIn PDF document text
    • https://dewufore.weebly.com/uploads/1/3/4/8/134857007/gerunotat-rabipe.pdfIn PDF document text
    • https://nozubewow.weebly.com/uploads/1/3/1/1/131164313/7003725.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413122/normal_602ea775390d5.pdfIn PDF document text
    • https://wavikifetin.weebly.com/uploads/1/3/4/9/134901048/31991.pdfIn PDF document text
    • http://cashbackmoney.info/gre_quant_free_practice_testapp7i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416128/normal_6031560c7a78b.pdfIn PDF document text
    • http://noncomform.space/79304282523up4xh.pdfIn PDF document text
    • https://cdn.sqhk.co/kezinujus/EhibWje/can_you_escape_50_room_2_level_22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_60352a5e1ea20.pdfIn PDF document text
    • http://ctyr.ru/razer_firefly_not_showing_up_in_synapset35az.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408993/normal_600f8aca3fb5b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC249 5284 bytes
SHA-256: eee58cf881e3447656c93a8e2b1a0d8e0a6402dfab58de4d96dd5d2fca641552
font_01_sfnt_off0000d434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD434 10380 bytes
SHA-256: dea246514768c6eb72d5d34fc03ddbf78259432ec9b4c75ab1a3697df3996671

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