Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2761256bb7f5bd…

MALICIOUS

PDF

81.7 KB Created: 2021-03-19 07:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 602f0f6a6fefd4e154cae0a1c953b700 SHA-1: 613b9b4e001a6c2635b5987b8c200d7b7d6c4c6e SHA-256: 9b2761256bb7f5bd4580e89380855f4dd8cceb9a2357ad83c1431f36a8e4072a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/award?keyword=programa+para+unir+pdf+online PDF link annotation
    • http://zuzitijimopa.22web.org/goguvufirijovami.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://uploads.strikinglycdn.com/files/fdc2788b-3e7b-47d3-bbd9-532e44d338a3/sat_books_for_sale.pdfIn PDF document text
    • http://weparizik.epizy.com/23050755554.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/vemag.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_c7fc371c18114329a2c072a7f592e640.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/tcp_ip_protocol_suite_4th_edition_solution_manual.pdfIn PDF document text
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_1e7ad185a42d42aa903b63cbb9ca2c07.pdf?index=trueIn PDF document text
    • http://fipuzugajan.epizy.com/ryobi_18v_airstrike_brad_nailer_review.pdfIn PDF document text
    • http://tagutibebik.rf.gd/logiciel_de_traduction_anglais_franais_pour.pdfIn PDF document text
    • http://sigisifosa.rf.gd/wekujofajedexi.pdfIn PDF document text
    • http://sijuzoratimi.epizy.com/amiga_date_cuenta_libro_completo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3791d06-24ac-40eb-9365-e36bc620dda4/juzavigazewalusezixup.pdfIn PDF document text
    • https://6b54b0b2-91db-43cc-88c8-bbc4f7e20b37.filesusr.com/ugd/a773aa_c77e1a9595b14dd08be15e2cad1cdc90.pdf?index=trueIn PDF document text
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_3abfac99e8f548e7aae3b88e27869d4f.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_ab77c28a90d44f558f9785035a2cbe82.pdf?index=trueIn PDF document text
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_229e774671ad41c08d2c53eb08112d31.pdf?index=trueIn PDF document text
    • https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_e9b9279204ba4a0bbd11a362fa0e2031.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b41dec05-4b70-4b12-9fcd-51b9f60017dd/advanced_trauma_life_support_atls_guidelines.pdfIn PDF document text
    • http://kajusob.epizy.com/rhetorical_devices_in_speech_to_the_second_virginia_convention.pdfIn PDF document text
    • http://xupuwineris.epizy.com/hershey_candy_bar_wrapper_template_for_word.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/dinner_invitation_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/cursive_letter_b_printable_worksheets.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_off0000f08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08E 4988 bytes
SHA-256: 4ce58b847a2a92f5135c4cc33bfaf4bba2c63cfc9d707dc61fb37d5f6556c23e
font_01_sfnt_off0001015f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015F 13140 bytes
SHA-256: 1ff3970fecda7e67fd3d4312b55eb090501ead44a591c2eac455b8a5328d9cb0
font_02_sfnt_off00012982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12982 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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