Malicious PDF — malware analysis report

Static analysis result for SHA-256 953d82c75b8e46f5…

MALICIOUS

PDF

68.1 KB Created: 2021-02-24 14:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 974b88344b630b5211097d2162656b8e SHA-1: 308efce9ddd528d57f2c971efa7d9a460696c7a7 SHA-256: 953d82c75b8e46f571f60dc2d15aacab10f8939d3a5c4c734a0f5fefd549b604
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=love+dare+book+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4481994/normal_601db5e98be03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481985/normal_5ff2a9051bda3.pdfIn PDF document text
    • http://usesalon.xyz/cabin_fever_2002_full_movie_720pouhss.pdfIn PDF document text
    • http://bonifacy.site/subobemuswmzp.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/a9yihgd/battle_ops_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/3iiervl/cyberpunk_city_art.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411489/normal_5fe79b46f2f03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467287/normal_5fc699650fa18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411717/normal_5fcf19963fd83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387433/normal_603349838f866.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530070/normal_60065b4d395da.pdfIn PDF document text
    • http://sodaapp.pro/ti-82_stats_manualuopw5.pdfIn PDF document text
    • https://cdn.sqhk.co/vegubefeno/6hjihjf/subterfuge_deception_synonym.pdfIn PDF document text
    • http://digozulujatozuj.iblogger.org/13855046196.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_5fd194d271269.pdfIn PDF document text
    • http://scoretdho.best/5_celestial_bodies_in_our_solar_system290jt.pdfIn PDF document text
    • https://cdn.sqhk.co/fukefipemuw/jjigWjg/rujegowevinagavonodepov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dadojusox.epizy.com/butidapurajilalexumo.pdfIn PDF document text
    • http://xijukogejutaril.epizy.com/aesthetic_clinic_business_plan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC283 4452 bytes
SHA-256: 6f8ea43c42b3bc779f6de1637fe3e416d46bdc109c461d6f4e21d77bf16f5b75
font_01_sfnt_off0000d1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BC 10480 bytes
SHA-256: cb9be8f8d615e711dcfacecd1547616402b1d7c0b9e6980ef13cfd366e0cc0e6
font_02_sfnt_off0000f58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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