Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb9c7e9863e16b1a…

MALICIOUS

PDF

73.9 KB Created: 2021-02-28 16:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 54f4be853e740c82c92049929f808b78 SHA-1: dede6a308fb8f316e9c636475f1d2982229c0adc SHA-256: cb9c7e9863e16b1ad7e4c5e610302d3eaf8d62d5cfd1d3a1fb4d8464c73d65b8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used to deliver malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=how+to+turn+on+weber+spirit+grill PDF link annotation
    • https://cdn.sqhk.co/tiwefuxab/JGZTggB/princess_cake_recipe_swedish.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/duieLic/ark_survival_evolved_xbox_one_gfi_commands.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/WhgyjeP/cute_mermaid_simulator_3d_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/jjjTihZ/damubogizutidokelede.pdfIn PDF document text
    • http://all-casino.xyz/android_auto_start_app_when_charginghst23.pdfIn PDF document text
    • https://cdn.sqhk.co/rirerujel/gfo1npb/old_national_bank_routing_number.pdfIn PDF document text
    • http://endi-itali.space/can_you_buy_back_mortgaged_property_in_monopoly2tesi.pdfIn PDF document text
    • http://telemprom.xyz/python_programming_for_hackers_and_pentesterszsj68.pdfIn PDF document text
    • https://cdn.sqhk.co/bebumula/1Eid1gf/flow_free_bridges_sampler_7x7_level_12.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/jgijc7E/python_dictionary_update_key_value.pdfIn PDF document text
    • http://srakan.space/72773429834nv1yt.pdfIn PDF document text
    • http://plsale.pro/bypass_frp-_1._0._apk5xupq.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/jalasilunaz/zilesimopusufapiwela.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/codycross_answers_group_142_puzzle_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/omarosa_unhinged_free.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_off0000e650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE650 4968 bytes
SHA-256: cc057caa2290e38841781c0618c0272e02314e4f21ae8939d0b1ff9be5a15e15
font_01_sfnt_off0000f756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF756 10280 bytes
SHA-256: 63cebecce442cbeb07fd99b78958dd0928c7d0d7a781a800df471435a102bd3b