Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc5f7f2abc99003…

MALICIOUS

PDF

71.0 KB Created: 2021-02-27 22:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f7832fc6771607d5ee394ab7fcc74ebf SHA-1: 0b96fb54010eb13695be14e263c2137ba2770c1c SHA-256: 7dc5f7f2abc99003bf4043726d5482f1c47ad8402ba377c8935065da42f86cde
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://resalured.ru/award?keyword=sum+41+walking+disaster+lyrics+meaning PDF link annotation
    • http://garanibukumom.scienceontheweb.net/how_to_teach_auditory_processing_disorder.pdfIn PDF document text
    • https://vilabusifa.weebly.com/uploads/1/3/0/7/130776169/muvixutulo.pdfIn PDF document text
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/fbecac26fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fef6022ae256.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/ed1122f976e515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_6015b4f0c3962.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/what_do_you_do_when_your_kindle_wont_turn_on.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447434/normal_6033a89d50f4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379719/normal_5feb4c517463c.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/jikuxusekipaka.pdfIn PDF document text
    • http://temivenoni.iblogger.org/android_tv_box_remote_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tulajadulixo.myartsonline.com/30061573553.pdfIn PDF document text
    • http://jotudokizer.onlinewebshop.net/fopusulumum.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/android_9_pour_mate_10_lite.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/azshara_s_eternal_palace_tank_guide.pdfIn PDF document text
    • http://zulifozomitolos.rf.gd/james_patterson_book_list_by_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/a_level_maths_indices_worksheet.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_off0000d868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD868 5760 bytes
SHA-256: 1ba0dc0edd8e12a550093a726a007f663bd18daf97506f69b6f382e84109bde5
font_01_sfnt_off0000ec16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC16 10160 bytes
SHA-256: cdfbd63b71f0443f85c1d2a339a57bda0b286d515131259ed67030c2f22ec79c