Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e9cdfff729f6a0…

MALICIOUS

PDF

74.5 KB Created: 2021-02-25 23:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e82df80ea872c27268611edd358c081b SHA-1: 3987858bdca2dadcb91fa7cc6a66240d6465de3c SHA-256: 05e9cdfff729f6a03e59c846e4e90cd3ccb975685766b569eb8ebc9bda0cc398
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://crophysi.ru/wb?keyword=software%20developer%20salary%20in%20us%202019 In PDF document text
    • http://goproonly.com/electron_configuration_using_aufbau_principle_of_argon4bw3d.pdfIn PDF document text
    • http://raisinslabs.club/91285081133z3se2.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/nipelir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463306/normal_6008506e85b3b.pdfIn PDF document text
    • http://myluckywin.site/bunion_corrector_platform_sandals_australiapr8m5.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/ij2Lhdn/galaxy_wallpaper_for_iphone_xs_max.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469617/normal_601b449e3429b.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/4062178480.pdfIn PDF document text
    • http://shopyou.online/wugaxomugotavekiromipqz4kr.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/aJgjFzS/mint_tiny_house_company_canada_goose.pdfIn PDF document text
    • http://makamar.xyz/what_were_the_religious_beliefs_of_ancient_greece5oqx2.pdfIn PDF document text
    • http://excellent-spb.ru/69338068351hjdnx.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/muvexi.pdfIn PDF document text
    • http://idealica-italiauficiale.website/pupebemufozomeyaaai.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/sap_hana_free_online_training.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_off0000e5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B3 5876 bytes
SHA-256: f9737a1737c8e54fe179f637ce42c82ad719f883519b56bcefdc9f547b761221
font_01_sfnt_off0000f9de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DE 10280 bytes
SHA-256: 12cdabaf0d2b3b3b3eaa8c0d0aa325913de763e46c14c1558758297b5dbb3629