Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f7602ef87b0b6c…

MALICIOUS

PDF

79.3 KB Created: 2021-02-28 21:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f2369e25dca9b3f03cd44e34961b420b SHA-1: 205300d224cc2f29c67c9a0869bf5f7bc8a555d3 SHA-256: 55f7602ef87b0b6c52fbe0b11354b073706fe7ff955a24f6e851fff212b5408f
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://pelibifir.ru/wix?keyword=activity+5.4+calculating+properties+of+solids PDF link annotation
    • http://golixudib.mypressonline.com/relafi.pdfIn PDF document text
    • http://povulofi.mywebcommunity.org/which_version_of_pride_and_prejudice_is_closest_to_the_book.pdfIn PDF document text
    • https://cdn.sqhk.co/fewukise/au0pjhJ/pencil_sharpener_in_spanish_language.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/super_mario_bros_2_game_of_the_year_meme.pdfIn PDF document text
    • http://rejasikega.scienceontheweb.net/46331478599.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/what_is_the_teachings_of_don_juan_about.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/one_touch_ultra_2_battery_instructions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ditiziwux.rf.gd/65392029700.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/kenmore_elite_he3_gas_dryer_parts_diagram.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/hp_12c_mortgage_calculator_instructions.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/vutop.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/23269661091.pdfIn PDF document text
    • http://sivikonalijuto.myartsonline.com/curso_gesto_de_marketing_digital_e_mdias_sociais.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/55327817414.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/41236762428.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_off0000f600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF600 5720 bytes
SHA-256: 21e233e2704d4338b05bc16da19ffd6bf7dfb6693b63cd895e0ca371515456b5
font_01_sfnt_off000109b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B2 11368 bytes
SHA-256: 68dcbb8a45ba1d44579dce54a80ad336ca58444735053d746b7de46f383f0a88