Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c504e80b09d119f…

MALICIOUS

PDF

71.8 KB Created: 2021-02-16 19:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 2fdb1ab3d4e06d599644592985d4de01 SHA-1: f3c73201361949474e1481b013c2c3aa0bcf553b SHA-256: 5c504e80b09d119f020cf5046127d33aa07056aff0f3c52301944c8922b3ebcf
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to a 'world of darkness character sheet pdf', which is likely a pretext to encourage clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=world+of+darkness+character+sheet+pdf In PDF document text
    • http://paradusafe.iblogger.org/free_resignation_letter_template_microsoft_word.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/pQYf7gh/crash_test_dummy_game_unblocked_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/DIicvif/slow_motion_video_editing_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/lSIicua/cartoon_wars_2_game.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/ahD45ie/sanezirikidixatigikusil.pdfIn PDF document text
    • https://cdn.sqhk.co/xataruzepape/hhjgdji/75191896213.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/vPOQhhB/ai_artificial_intelligence_movie_ending.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/bhhajah/36539221615.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabakope/ZcVhbjd/nesipapedagiduvan.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/lgeAoif/smashbox_studio_skin_foundation_color_match.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziboporo.epizy.com/mevogujotosoj.pdfIn PDF document text
    • http://tovajukoxeboder.epizy.com/binomische_formeln_aufgaben_klasse_8_gymnasium.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/classifying_endothermic_and_exothermic_reactions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/34392978389.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_off0000ddf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF3 5320 bytes
SHA-256: 31254a327f59b549144e26aa60c345cd6be5073e5778a81f69c687751cd1af81
font_01_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 10044 bytes
SHA-256: ed02628bfa83fcd995007463e02879192d5254f23250679805ce04fd52aa8a62

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