Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2c9a24b9232c07…

MALICIOUS

PDF

71.2 KB Created: 2021-02-10 02:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3a6f33105a663cfe8fb23b22fca1afe9 SHA-1: 09946d289b1afb11c13d93844ed64c7ca05f6ebb SHA-256: 2f2c9a24b9232c07cb132e54a1df6e208cc752d50384561de0e8554f72adf876
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=hanukkah+song+lyrics In PDF document text
    • https://menajogatidufe.weebly.com/uploads/1/3/0/7/130740573/putafabijejopo.pdfIn PDF document text
    • http://kixetojonomezad.22web.org/nufexovijo.pdfIn PDF document text
    • http://balifruit.com/24562631206e34ms.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/idEwheK/31892113338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419633/normal_601b67a4f3a28.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/gjMhj3G/gold_silver_price_news.pdfIn PDF document text
    • https://gufulesem.weebly.com/uploads/1/3/4/6/134698375/xinuj_vupavasavel_rewovo_xanux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_5fe5c135da9f9.pdfIn PDF document text
    • http://eushopvmn.site/2019_honda_civic_type_r_performance_partsc3ew3.pdfIn PDF document text
    • https://satepiwe.weebly.com/uploads/1/3/5/3/135350267/xupumowanesagut.pdfIn PDF document text
    • http://santand-es.com/nuninunnzubh.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/ShbIics/95524900236.pdfIn PDF document text
    • https://wanalupegekiful.weebly.com/uploads/1/3/4/8/134879682/lovokekegutezejovi.pdfIn PDF document text
    • https://cdn.sqhk.co/dujujema/KIUjdxA/the_weather_channel_live_right_now.pdfIn PDF document text
    • https://buderenedisam.weebly.com/uploads/1/3/5/3/135302361/gebekeriwijezizojem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://galapeb.epizy.com/ephesians_2_bible_study_guide.pdfIn PDF document text
    • http://radujexoxetapil.epizy.com/90569980141.pdfIn PDF document text
    • http://gemimixobisuju.epizy.com/85273985289.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_off0000d96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD96F 5188 bytes
SHA-256: 98c0ec5919f01d3f541456be79e2c3d66bf549474ea416d14d654a99e92dc8cc
font_01_sfnt_off0000eb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB15 10788 bytes
SHA-256: ca8c38328fd4f86df9fa9a37a07b940664adebdad364f738593f781eccc02d65

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