Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3675f204938115c…

MALICIOUS

PDF

80.3 KB Created: 2021-03-23 06:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c073c26242629f9e6717fd74d6909555 SHA-1: 265c12397314d3f5b0e1122d7983cc0d656b60c8 SHA-256: d3675f204938115c564ae12b7bf9a0846e9b14ec8416b29b397d67d65d0e69f7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content or visiting a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to exploit user curiosity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=the+ceaseless+crusader+pdf PDF link annotation
    • https://cdn.sqhk.co/kasuvapexal/jJheVii/red_ball_1_game_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/2jfifgh/nanog.pdfIn PDF document text
    • http://samiter.22web.org/90964106795.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/zghhbKl/audio_spectrum_after_effects_plugin.pdfIn PDF document text
    • http://rupaduwovuw.getenjoyment.net/l_blends_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/2jhidVh/jefupixex.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/i6hehdO/3475229066.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pusori/cycle_race_game_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bf68be4-b9e9-4eb0-bff0-cc3f93c8d1aa/dr_zivago_streaming_ita.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/23510325673.pdfIn PDF document text
    • http://disoluje.myartsonline.com/assurance_wireless_application_maryland.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cc50ffe-b358-4b7c-b6e5-6c7515dd66ba/lumexolanetopejak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b976c8f4-35ce-4160-9dc3-751a1e64d02d/giteriwosibutixodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccfb70fd-b383-42a6-8d5e-f30fe6448414/ratukuriwolezenoxa.pdfIn PDF document text
    • http://lexamokoxerum.atwebpages.com/how_to_turn_off_brinks_security_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a1dbb6-760e-4311-bc1f-319585602ee1/wegix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac73578a-d8ad-4b68-981c-9eb6b577f78d/vopexinenajoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d57ad4a-b80b-4265-9335-405f17ca11f9/math_textbook_grade_7_canada.pdfIn PDF document text
    • http://pofiwadawez.rf.gd/code_128_barcode_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/chicken_biryani_recipe_in_malayalam_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2001d7cc-0331-49f8-95ac-152cb5952cf1/16635759254.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_off0000f998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF998 5192 bytes
SHA-256: 391d4548ac7eee7d5bd7006248ff7314416bcc0c24ec15a4910a7e2335298a52
font_01_sfnt_off00010b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 12184 bytes
SHA-256: 6cc0841900352d2902ce8653843c29c5a7854254db386bb2dd72212a2e0a6c58

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