Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ddd0512aa02dfa…

MALICIOUS

PDF

74.3 KB Created: 2021-02-25 06:54:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5fba25926ba3390c0a5b08d91d4c959 SHA-1: cfa86ebf9cb0b1f2f11e55d9243d1cc3d34940b2 SHA-256: 20ddd0512aa02dfa924543b004d930b7cd0ad45289659019ddf62bc4b758682d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=sunbeam+mixmaster+423a+manual PDF link annotation
    • https://cdn.sqhk.co/saligoliti/gehcSgj/12332_zig_zag_way_tustin_ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_5fd182d9ad532.pdfIn PDF document text
    • http://kekisire.22web.org/example_of_recommendation_letter.pdfIn PDF document text
    • http://discovljzg.fun/610644400534a0qh.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/RjbjjxY/top_music_player_software.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461523/normal_5fdd604ce89cc.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/P3iirHf/simon_the_sorcerer_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409411/normal_5fd28e2959208.pdfIn PDF document text
    • http://jejidizifobimir.iblogger.org/33801517967.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368229/normal_5ffa29a710811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://verirajoxa.epizy.com/83498462241.pdfIn PDF document text
    • http://tiwemevi.rf.gd/vonobuzusumotimuki.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/navien_240a_dip_switches.pdfIn PDF document text
    • http://seguwogira.rf.gd/impartial_reporter_archives.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/benzodiazepinas_ansioliticos.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_off0000e160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE160 5528 bytes
SHA-256: b04d4a75d366317607fa8f3cdade32aed2f86943bc5d9ca624e54ff6019b2a92
font_01_sfnt_off0000f41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41A 12448 bytes
SHA-256: 5583f325d243b26f0ecc1a12c82836df866737b89af74b68bcb62fa6618159be