Malicious PDF — malware analysis report

Static analysis result for SHA-256 263e721ac013b892…

MALICIOUS

PDF

78.8 KB Created: 2021-03-15 16:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5c2bab623c057dbb1f2a925f8c4cb172 SHA-1: 94ef89c3d02a025bd5fc2b93de3d3dc88c34e360 SHA-256: 263e721ac013b892dc8e0cec9958e911f6256572b086afafdcc8334ee1c6494c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=kung+fury+movie+streaming PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4502248/normal_603722b4e4643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_60238ef52cb65.pdfIn PDF document text
    • http://texno3ua.com/titugevn3blb.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/fSnhbYE/sixigodow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427809/normal_60098461eadef.pdfIn PDF document text
    • https://cdn.sqhk.co/dejenuluzew/O0kgfih/phoenix_zoo_groupon_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/zelagagunogo/Ihawejf/gunababagumopus.pdfIn PDF document text
    • http://innov-cis.net/70092549521n1qni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5feb4c6725a0b.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/tX0ig25/china_embassy_authentication_form.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/QciAhib/epinoyload_app_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/278b917d-c99d-4501-a59b-80a902222081/82969793521.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/batman_cavaleiro_das_trevas_hq.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/fuzexiba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2f30d6-c500-4d61-a820-bf0e372f41df/ejemplo_de_memos_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/how_to_make_a_zippo_hand_warmer_hotter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23dce34b-771f-4d69-8dec-c90e52c8cb0d/12177524293.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/75386956229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac8bdfa-75bd-4971-84e8-990ee5339170/wagner_procoat_sprayer_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be57933-a166-47d6-a52c-ab237b2995f5/skyrim_se_best_weather_mods.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_off0000f731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF731 5188 bytes
SHA-256: 667da1a32aae116f97be4b62e519e86c28cd1a8b12ce433ad93681b99e546294
font_01_sfnt_off000108de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DE 10872 bytes
SHA-256: 31a3b4905af17f795eea581807a0d1fb0c29a7ebe450747f53a4440cb27d403b

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