Malicious PDF — malware analysis report

Static analysis result for SHA-256 57bf82c95f399a6b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-23 10:03:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c7ee1a9953d2b63598b038cb4072e150 SHA-1: 99422723d8cc5db5b865e8134aa2c0134740913c SHA-256: 57bf82c95f399a6b3e586bd0296618fb8630c4dd792bf7fa2e0b6eee32103b09
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/aws?utm_term=how+to+replace+epson+8350+projector+bulb PDF link annotation
    • http://lovemecompletely.com/disney_byju_s_learning_app_for_pcelhti.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/Rggchc8/maxpreps_football_high_school_scores.pdfIn PDF document text
    • http://tijatanilipe.iblogger.org/fekixazikunasurixewopog.pdfIn PDF document text
    • http://pezinejotu.22web.org/what_is_the_default_password_for_wd_my_cloud.pdfIn PDF document text
    • http://jojujikipafoz.iblogger.org/89626399541.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/cgfgejf/bike_race_free_mod_apk_unlock_all_bikes.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/1ibgcN6/arcade_mayhem_shooter_apk.pdfIn PDF document text
    • http://tesocoin.online/89069002840mtgy3.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/MggdPGc/triple_double_slots_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodabatot/uhghj7S/87284729479.pdfIn PDF document text
    • http://kneeksi.ru/card_wars_adventure_time_apk_gratisk3k1z.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/timeziso/disujunaxatolidasu.pdfIn PDF document text
    • http://kexobub.rf.gd/mogibo.pdfIn PDF document text
    • http://vuvodulewuxewe.epizy.com/how_to_calculate_cumulative_binomial_probability_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/3d_contour_mapping_software_free.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_off0000d762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD762 5820 bytes
SHA-256: 96d7fedf528ef1e4c6fee03d31f4419b262c6d1924eb122dd8a67ee1897c17c1
font_01_sfnt_off0000eb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB49 10868 bytes
SHA-256: 11bcd3ea962b9329abce87ed6ce84dfd8fb5da6a91a7a2420ab6f06743429d4d