Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5fa6285c42dc94e…

MALICIOUS

PDF

81.0 KB Created: 2021-02-18 15:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a3b0c06999c10b25f81cae72bc16ea26 SHA-1: 8c16c179d576829b2c1870ad7c6a9fa5de4fa0c5 SHA-256: c5fa6285c42dc94ef382ba161667feb1de30d660c246b0bdede5db32afd5ee54
96 Risk Score

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 0.9998

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
  • 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://leonvi.ru/strik?utm_term=harry+potter+first+edition+hardback+books PDF link annotation
    • https://cdn.sqhk.co/suxepemup/WFibBji/ruby_emulator_and_tips.pdfIn PDF document text
    • http://xokoden.22web.org/ecb_internal_model_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/libabafo/uJhjXJv/kobotobosudekadojasuwasip.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/8vhjICS/94341636331.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/azFidhf/centipedes_in_house_florida.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/ghjcjim/hidden_survivor_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/JgghWjc/98206586618.pdfIn PDF document text
    • https://cdn.sqhk.co/wavudasawete/ciegdIF/siwikad.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/gjiRI3U/hunter_master_of_arrows_best_weapon.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/fgfieic/48987140745.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/Kid8wmR/jaxerubogo.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/VEBicji/warship_battle_mod_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/senodiw/linear_and_quadratic_sequences_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/apa_style_citation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/getinok.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/sixasukore.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/88707855102.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/free_blank_checklist_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/xufubogeraxagobibutevoba.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF368 5264 bytes
SHA-256: 0b85d3e3cb50f6dc3e84b4f7f9d54c2888b54671ae40ebe963f9795c54b239ce
font_01_sfnt_off00010541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10541 10348 bytes
SHA-256: abfc78825a1bc55c2029723b418f4e238e053993377b819eef2cd00376438555
font_02_sfnt_off00012871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12871 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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