Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f4c1aac904e823…

MALICIOUS

PDF

79.5 KB Created: 2021-02-15 15:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4c337b79dd04dd7438a168c0dc7f072f SHA-1: 84fa6fbde6f69d2ffe06786a819914b881d49ba6 SHA-256: 95f4c1aac904e82371fee6b81f81eb3624ced2cfef54c889c005c6bb79dc9dac
214 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=oceanside+anglers+club In PDF document text
    • https://cdn.sqhk.co/datolabevev/gcjficV/waralat.pdfIn PDF document text
    • http://wigisosidika.22web.org/a_news_report_on_road_accident.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/9dyjbhj/dino_hunter_deadly_shores_descargar_gratis_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/NhdwifB/swamp_fox_theatre_showtimes.pdfIn PDF document text
    • http://tujugebisuxilun.22web.org/tagidetimime.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/gaR9Chh/birth_certificate_akron_ohio_address.pdfIn PDF document text
    • https://cdn.sqhk.co/wiluxuko/hblxDih/best_code_editor_mac_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/jfjegeW/aliexpress_hair_bundle_deals.pdfIn PDF document text
    • http://zavutodoga.iblogger.org/29957264997.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/diijaBc/classic_3d_pinball_space_cadet_game_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/world_conqueror_3_generals_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/toxicwap_jumanji_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/januvibidutusekifujup.pdfIn PDF document text
    • http://fobexegedun.epizy.com/gino_vannelli_brother_to_brother_sheet_music.pdfIn PDF document text
    • http://bubezowi.epizy.com/66405589819.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_off0000f96b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96B 5276 bytes
SHA-256: 34d8e772e4b5f03af28e5a680c5f479a5945398e4ea02612fefcf340d2925e44
font_01_sfnt_off00010b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B61 11132 bytes
SHA-256: d9824220b01059484b4caa6f1130634bd33623664176f459e15d8c6c7da7184f