Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ca0bcb166f1814…

MALICIOUS

PDF

79.9 KB Created: 2021-02-16 04:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dc983ce8c728a8646bd36d48839960cc SHA-1: b5ff832eec2995ea70904792815268e03cf294dd SHA-256: 54ca0bcb166f1814b3d1f1ced044f0c2a7ab05cff6fb0537e1b7e0c3de291938
126 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
  • 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.
  • 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://baarspo.ru/wb?keyword=online%20quran%20classes%20for%20adults PDF link annotation
    • https://cdn.sqhk.co/kunimanujage/hjjd5hj/jalinotijorakutikule.pdfIn PDF document text
    • http://ctyr.ru/steps_in_the_strategic_marketing_planning_process_quizletr1hyz.pdfIn PDF document text
    • https://cdn.sqhk.co/govazilose/e9jjhd6/archer_hotel_redmond.pdfIn PDF document text
    • http://nuveclovet.xyz/60094375367cihdk.pdfIn PDF document text
    • https://cdn.sqhk.co/fixosotefe/brheBha/happy_pet_story_virtual_pet_game_mod_apk.pdfIn PDF document text
    • http://curvepreloved.com/damatgdnzx.pdfIn PDF document text
    • https://cdn.sqhk.co/koroxofusino/yja0YTu/mclaren_formula_1_car_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414515/normal_5ffe87c86a864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373516/normal_5fe57b5023245.pdfIn PDF document text
    • http://domastmsk.space/references_citation_format73rjn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465257/normal_5fffb3c333591.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/hdG4Uii/85913927631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_6019ac2b038ef.pdfIn PDF document text
    • http://how2clever.com/libesuvewedudulodubiowpds.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/mipizaju/apkland_sports_tv.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_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 5168 bytes
SHA-256: c771d33cf2817f9c55289028b459b8d6a4187869de7771162f059f35b2334dee
font_01_sfnt_off00010c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C59 11420 bytes
SHA-256: a6e3d796128997d9f511b9decde7ad782966b22c1fa2c1b142c1ffa7d5409836