Malicious PDF — malware analysis report

Static analysis result for SHA-256 685b866ea07a3ba2…

MALICIOUS

PDF

77.5 KB Created: 2021-03-03 11:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4e6989cc282ad67a694ead981c89939e SHA-1: 7c9cff76300b4762315a436a49af470899802e1c SHA-256: 685b866ea07a3ba2b5aaffce4a6e065012e5f5f098c1686d26cc740421006c73
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://seumenha.ru/wix?keyword=green+tree+servicing+merger+with+ditech PDF link annotation
    • https://cdn.sqhk.co/puvubuzu/ggjDre8/slenderman_mod_minecraft_1._15._2.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/NhV3ji1/live_lock_screen_on_iphone_6.pdfIn PDF document text
    • http://samo-katim.ru/mr_badman_kidi_videop2wup.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/ahe2ign/word_stacks_level_744.pdfIn PDF document text
    • https://cdn.sqhk.co/pajijolabalu/jfgfjgA/download_idle_gun_3d_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/zjaohfh/acellus_sign_in.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/6jagdhj/field_hockey_training_videos.pdfIn PDF document text
    • http://sdek-24.cc/vw_service_center_elmsford_nysn8jg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491148/normal_603e4c4764967.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/eiaujgL/jafitatagopebotujitawat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386852/normal_601d4d97d5d9a.pdfIn PDF document text
    • http://blancly.xyz/dreamcast_bios_retroarchpl4sg.pdfIn PDF document text
    • http://agentsecure.space/g_shock_rangeman_price_australia7jb4r.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/jghb7Qq/gipuxeke.pdfIn PDF document text
    • https://cdn.sqhk.co/nakizenonetu/e0vmahg/64830271344.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/igfY585/sasojokomadejitanake.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://godutugogusapa.rf.gd/blue_velvet_lana_del_rey_sheet_music.pdfIn PDF document text
    • http://wetetepipemo.rf.gd/82838353129.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_off0000f43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43A 5292 bytes
SHA-256: a681978b3231cebb62ba05550dae1f1e3b469154bfe6578f12924e1756b87699
font_01_sfnt_off0001062c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062C 10108 bytes
SHA-256: 8e87fd349eb50e46f0f87486f8d5604648df76fdb8077b7de0812712a7fb2544