Malicious PDF — malware analysis report

Static analysis result for SHA-256 37187167e1cb160a…

MALICIOUS

PDF

73.5 KB Created: 2020-12-21 16:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 3a67ffe7d1ec31e7766f0ab825746986 SHA-1: 25f29119151f7c8276c03c4eff9dcddc3157aa6b SHA-256: 37187167e1cb160a3915b998703d65cc5cb1a204a8f4d6068baee2fb4ffc2e44
196 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?utm_term=reactions+of+alkanes+worksheet PDF link annotation
    • https://rigagebefizo.weebly.com/uploads/1/3/4/6/134631069/vitid_tozofogovawi.pdfIn PDF document text
    • https://jopomewimedadi.weebly.com/uploads/1/3/4/4/134465277/e443d60.pdfIn PDF document text
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/taxadifupesafutom.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://xixipafo.weebly.com/uploads/1/3/4/7/134745113/d6f9cba591a525.pdfIn PDF document text
    • https://mepolelo.weebly.com/uploads/1/3/4/6/134626310/mapibonovozuvinebad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdec2d1f51818731100bc67/t/5fdf30d491828d0f5d556bdc/1608462549140/belazudagukowerewob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc07d836b97992eb55a0df7/t/5fc2f25abc819f1cf43a4047/1606611547756/craftsman_19.2_c3_tools.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc289d2116eb00e3c565727/t/5fcbd56b11c29807e6e3f75b/1607193970657/carrom_disc_pool_hack_mod_game_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/695ecc24-6789-40cf-a29c-439ca1ddad2b/cabot_public_schools.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdfda9307af9e0e16040623/t/5fe05dfeef735726d28aa9ce/1608539647741/below_the_belt_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e22605e7-3440-4d30-bd30-beb6e249d0ee/world_war_1_activities_ks2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79499c2869f0c81c408f5/t/5fcdc41ed235d37878e60163/1607320606708/police_car_driving_school_car_parking_simulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/94231262460.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/dead_or_alive_paradise_pc_game.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_off0000e0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C8 5132 bytes
SHA-256: 6395276a731c93c98b96cc3404c0310ef706538711174a297fc073467cda2480
font_01_sfnt_off0000f253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 11656 bytes
SHA-256: a49a0507a89c9a10c16dbcf4e74fa96b4ae3a7fc3c2251e30a113745496784ee

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