Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2cabf65905fb8df…

MALICIOUS

PDF

65.9 KB Created: 2021-02-21 23:13:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 452d19e6a6d57272dee601f22a30a740 SHA-1: a7cd7b6444693e80367dc7794d13d6103e46a1af SHA-256: c2cabf65905fb8df2def7b3351caba92ab271a6d089fa9dd9837091886da50eb
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

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://baarspo.ru/strik?utm_term=theological+dictionary+of+the+new+testament+volume+2 PDF link annotation
    • https://cdn.sqhk.co/savunowudob/HX3hMgi/xebokodakada.pdfIn PDF document text
    • http://bodyita.space/kali_linux_tutorials_for_beginners9d587.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/h2Fibgg/formula_racer_unblocked_games_66.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/bjavKzR/sitalevafaruxatawuzuko.pdfIn PDF document text
    • http://in-arenas.com/tinegovomutavevavmzr8.pdfIn PDF document text
    • http://yoptan.space/7013009486p21jm.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/cjcggia/big_windows_in_bedroom.pdfIn PDF document text
    • http://republvinb.fun/devagidinikebemodun52iu.pdfIn PDF document text
    • http://naturka.space/appsc_group_2_indian_history_material_in_teluguz9lfj.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/3id6OdX/bubble_popping_game_for_toddler_babies_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/ih9g35G/dudumiwina.pdfIn PDF document text
    • http://romeita.fun/fundamentos_defensivos_del_baloncestoo7j6e.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/agejgxj/easy_granny_square_pattern_youtube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://padapafodimaf.rf.gd/nisutugosexifi.pdfIn PDF document text
    • http://rabuvof.rf.gd/beat_saber_songs_list.pdfIn PDF document text
    • http://savefativiluz.epizy.com/apologies_letter_to_customer_template.pdfIn PDF document text
    • http://jogekofasi.rf.gd/ei_reporting_msca.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/13188277564.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_off0000c7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FF 5772 bytes
SHA-256: a724a6edae23bf3e317e64f91856256486f74ce648dbf1daf386ea833a303971
font_01_sfnt_off0000dba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA0 8984 bytes
SHA-256: b495f0d306287d93adbe02f026f3ebef4f2cfe51611fca9bb6052b62bf077245

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