Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a91fb8c115952a…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 09:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 94cc4030be2e5a1867d403693380c7e8 SHA-1: 0607704cece5b7cefe0017c1c85e5e284d5a4d08 SHA-256: 42a91fb8c115952aff82444ca8e893f82ba8363cd8179c2f2a814a9889694dd4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=5th+grade+speech+topics PDF link annotation
    • http://nuloriwilorij.scienceontheweb.net/cygolite_hotshot_pro_150_usb_rechargeable_tail_lights.pdfIn PDF document text
    • http://varuvoruva.iblogger.org/dj_wala_dance_new_assamese_song.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/xebofagunax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500417/normal_602df383e83c7.pdfIn PDF document text
    • http://nelawetazabuta.66ghz.com/canada_visa_form_imm_5475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487431/normal_6035832b893b9.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/how_to_learn_forex_trading_fast.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutepiguzusudax.epizy.com/empire_total_war_austria_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/guideline_value_in_coimbatore.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/cg_dj_song_free.pdfIn PDF document text
    • http://jilovin.epizy.com/mathematical_lateral_thinking_puzzles_with_answers.pdfIn PDF document text
    • http://bikilut.epizy.com/lafiluwototikogoz.pdfIn PDF document text
    • http://dulidezupo.rf.gd/pijoduraf.pdfIn PDF document text
    • http://poramukuwulaji.epizy.com/8997849739.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/iceberg_slim_daughter_camille_beck.pdfIn PDF document text
    • http://bekusisit.atwebpages.com/xukunomipodoxapenare.pdfIn PDF document text
    • http://peledopa.myartsonline.com/76297052983.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/81583214101.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_off0000e07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07D 5332 bytes
SHA-256: b370a994141e6e3e2f91a85e3ed9aff8831c64ad7cdd070e873cab66384deeed
font_01_sfnt_off0000f29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29B 10568 bytes
SHA-256: 4e61a4929724ddad9ac0e01aa76d6783e36427605a54c2a6ae48fe5e085f8d3b