Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0097bd640886b4…

MALICIOUS

PDF

69.6 KB Created: 2021-03-09 17:10:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 258a601c4f37e7f7bd8cf21f2b3da253 SHA-1: b1a3f8c7b4a8e5aa5b0961d1100df2e237800367 SHA-256: 8b0097bd640886b47b57ca9ca156d0f3eef8c95cf52ace3bba9edd167d3e6e21
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/award?keyword=barron+toeic+pdf+free PDF link annotation
    • http://picsonair.com/database_management_system_mcqs_for_ppsciencexc8m7.pdfIn PDF document text
    • http://sendgrid-de.com/paxeruvelixot5xfj9.pdfIn PDF document text
    • http://fastpysystem.online/how_to_find_a_job_as_an_interior_designeres4kb.pdfIn PDF document text
    • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/4808916.pdfIn PDF document text
    • http://setofexperience.site/legogilapil67695.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/i2Hjah5/air_combat_sky_fighter_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/jiiahjn/java_stack_implementation_stack_overflow.pdfIn PDF document text
    • http://musc-media.xyz/ditodetofukowavogutobijasz8jh6.pdfIn PDF document text
    • http://help-violation.com/attestation_simplifie_particulier_employeurfbpc8.pdfIn PDF document text
    • http://frukt.space/tekonsha_p3_brake_controller_manual9n1og.pdfIn PDF document text
    • https://tasototunone.weebly.com/uploads/1/3/4/7/134755659/3281d1e749253.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/mipizaju/storyboard_that_classroom_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ce16508-52dd-4c2a-956b-d87b6c865bc4/95362422319.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/business_information_systems_bocij_4th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7704f4b-e632-41f9-a9c2-afce73040f3f/37296793133.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/vebelofaminiletigad.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_off0000d6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C4 4988 bytes
SHA-256: c0304ea25509c403e08d985386fa0c2e031b1e0a523b4f165c871d304b7342ee
font_01_sfnt_off0000e7cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CF 9936 bytes
SHA-256: de3d98db2fa9f67fa1c70ef7194b44dda93ea4414ac71eff3a9ca5e09337b7a8