Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9e17bace86fb4b…

MALICIOUS

PDF

76.3 KB Created: 2021-03-05 14:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e58a65652a64751e502a27a43f1e6267 SHA-1: 75b511fb9a033dee5871f569c8450f7914dc3e9e SHA-256: bc9e17bace86fb4bb5e68b51f69e0a803585b7e914a8f630c06bff3b2b77644b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=zoom+g1on+patch+editor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365656/normal_603032a89364a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466143/normal_601832acaa4c9.pdfIn PDF document text
    • http://max-lifting.store/central_pneumatic_3_gallon_air_compressor_hose73k23.pdfIn PDF document text
    • http://avtoshtorki.shop/67398900185xlu9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477379/normal_5fd18fb495657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417413/normal_5ffd3aa14604a.pdfIn PDF document text
    • http://nosatines.mypressonline.com/pisipameloralumun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5ff6b410327c0.pdfIn PDF document text
    • http://fajiriduxir.medianewsonline.com/total_gym_xls_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529893/normal_5feeeb7a96743.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/hp_1320_driver_for_windows_10_64_bit_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447912/normal_60371bf89a043.pdfIn PDF document text
    • http://vutunema.mypressonline.com/kuziriwulat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://089130c0-62ae-4bf1-a93c-656440fe8451.filesusr.com/ugd/738632_39cab232e87c4f828cd88dfbc604ce90.pdf?index=trueIn PDF document text
    • https://ede36962-9452-4451-b182-fa4236ba9bc6.filesusr.com/ugd/83b1b3_978f4e8a0d14412ab2b522780a6c6885.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/04eb8a58-967a-4ae8-aaca-fc42eed4e3a7/andrew_loomis_creative_illustration_amazon.pdfIn PDF document text
    • https://6e345194-e688-4037-aa24-2ff230a16836.filesusr.com/ugd/ce9fe1_a9f711c5a63645efb1427a54b1773944.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c9147d4-eacc-4402-9374-71b17ca4bc35/app_clapping_music.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_off0000ebb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 5284 bytes
SHA-256: f3191b3cf5af90ccc1d642ec64beb21e98d3c68189696b1552dfa1c14e7b801f
font_01_sfnt_off0000fd92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD92 11476 bytes
SHA-256: e838b6cd44806be4c7d44f1eb2e47d9c653da15c2e87383a1f781a0de68d6faf

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