Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce58e6dcb16ca87…

MALICIOUS

PDF

82.4 KB Created: 2021-03-16 11:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 69ff09e21373d19990e6005e7c88fb6b SHA-1: 4736ef76d79957540148fffbfe0a64373a865f4c SHA-256: 2ce58e6dcb16ca871ad13c86aac7858c703cb06ba285f19ef868e31ca897b9f2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a link farm on disposable hosting. The embedded URLs, such as https://druttle.ru/award?keyword=cancer+de+estomago+pdf+scielo, suggest a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/award?keyword=cancer+de+estomago+pdf+scielo PDF link annotation
    • http://glasshookahcatering.com/modaxijupapikofemm0u0s.pdfIn PDF document text
    • http://padlamadla.site/riesgo_cardiovascular_definicionry0fk.pdfIn PDF document text
    • http://table-wait.com/world_of_monsters_marc_mcbrideiponn.pdfIn PDF document text
    • http://agent-spv.space/semesaduwapol9tmb.pdfIn PDF document text
    • http://handler-autoscout24.com/xufejijaxozljg34.pdfIn PDF document text
    • http://excschool.ru/alter_ego_names_examplesz0f80.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/auditing_and_assurance_services_16th_edition_solutions.pdfIn PDF document text
    • https://cdn.sqhk.co/pefatipi/xgjeMjc/minakipikakafinudasexo.pdfIn PDF document text
    • http://zarabotok.space/gordon_ramsay_ultimate_fit_food8tm7i.pdfIn PDF document text
    • http://gisejol.iblogger.org/mitubedugoverogiwa.pdfIn PDF document text
    • http://lexidubug.22web.org/pirates_caribbean_easy_piano_sheet_music_free.pdfIn PDF document text
    • http://idealica-italiaofficial.site/28257748851geon0.pdfIn PDF document text
    • https://cdn.sqhk.co/jobubexivex/wggjdv6/super_zings_s_hero_truck_monster_roller_magicbox.pdfIn PDF document text
    • http://chatik85939775.fun/13961586478o8nz6.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/henri_lefebvre_the_production_of_space_citation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivikonalijuto.myartsonline.com/cyberpunk_2077_get_delayed_again.pdfIn PDF document text
    • http://denuzux.epizy.com/how_does_habit_reversal_therapy_work.pdfIn PDF document text
    • http://xatosizukav.epizy.com/55647732257.pdfIn PDF document text
    • http://tagetebaj.rf.gd/apa_style_guide_to_electronic_references_2012.pdfIn PDF document text
    • http://tubazolen.epizy.com/usmle_step_1_questions_2020.pdfIn PDF document text
    • http://didexivuguw.rf.gd/farmacos_anestesia_general.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_off00010389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10389 5380 bytes
SHA-256: 28dbe55ab11e0513b9a48f4d70594ab8914a46f1a714011759679799a7013e83
font_01_sfnt_off000115bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115BB 11320 bytes
SHA-256: 5f103dfae5234d7bf06a50ab8042f7b59473a898a59eaff0b36efd59cbd15e62

Open this report in the interactive analyzer, or submit your own file for analysis.