Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16572c33665ffe4…

MALICIOUS

PDF

76.0 KB Created: 2021-04-05 07:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e330b5c08ee64093eaa07372c4b68bf0 SHA-1: 71004b87be7876deebc1f9701b459ca234d6322d SHA-256: f16572c33665ffe499b0938cb76eb4a62c4f1a315fbcfe28be5ad21b80f5f840
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While the document body text is heavily obfuscated, the presence of the external URI points towards an attempt to redirect the user to a malicious site, potentially as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=stained+glass+window+art+projects PDF link annotation
    • http://xijulefabogi.getenjoyment.net/sinejugusadizuxulufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_600dc71b1827e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447884/normal_60199045d4639.pdfIn PDF document text
    • http://xufubub.iblogger.org/bully_ps2_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470967/normal_5fd66557bd284.pdfIn PDF document text
    • http://pedujagafena.22web.org/business_plan_template_basic_free.pdfIn PDF document text
    • http://fevevafo.medianewsonline.com/wixujivitesifufepetebonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501204/normal_602574b19796b.pdfIn PDF document text
    • http://zekifafeter.scienceontheweb.net/exercice_algorithme_informatique_corrig.pdfIn PDF document text
    • http://fekowepiz.mywebcommunity.org/cooling_tower_function.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/redegelesibif/how_to_fix_red_blinking_light_on_sony_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e300830f-2523-401f-830f-43e23f7cca7c/nitapetuzawafugasoxexot.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/ruwoxesezixaduzure.pdfIn PDF document text
    • http://nekabet.epizy.com/is_the_shining_mini_series_on_hulu.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/laxijuxuzamesewojat.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/consumer_reports_cable_tv_you_re_fired.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/15266807466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9078402-7e5b-4da8-bfa6-37e454151532/planting_and_harvesting_dates.pdfIn PDF document text
    • http://faruvesisok.rf.gd/64883910403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46bed36b-f47d-4536-8f84-d2b044d81bd8/bissell_proheat_2x_8920_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/how_to_get_the_radio_code_for_a_2006_honda_civic.pdfIn PDF document text
    • http://vesedakowata.onlinewebshop.net/84706963465.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_off0000eb68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB68 5512 bytes
SHA-256: 9a8a997510fa37cfec6936d328d789a2cea06aacff7e32fda60e22be4400f48c
font_01_sfnt_off0000fe4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4D 10832 bytes
SHA-256: 5b843df87850bfc3fe05531f7f238eebb9e692e3a8cfc426bd73d5c519c0a008

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