Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf9fa8051f53ac6…

MALICIOUS

PDF

73.5 KB Created: 2021-02-22 16:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 79aa9ec98c26651814b5a25ad5bf940f SHA-1: 262d2f762f737912a45efd1c1db472f8aa5e3afe SHA-256: ccf9fa8051f53ac630832a039d4cd9b717a3919593807f7694e46b2feb7c7b58
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/strik?utm_term=5+inch+height+gain+blueprint PDF link annotation
    • http://bubuwem.iblogger.org/free_powerpoint_slides_template.pdfIn PDF document text
    • http://aicberg.net/930963516725tjaz.pdfIn PDF document text
    • http://afracheat9.xyz/senowiwudirae3vbm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488135/normal_6018defa21cda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386084/normal_60264ce6e0522.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/bipepezuwed/what_is_the_main_function_of_kernel_in_operating_system.pdfIn PDF document text
    • http://zumoriko.epizy.com/ballers_season_2_soundtrack.pdfIn PDF document text
    • http://danofida.epizy.com/rca_endeavor_10_hd_android_tablet_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/98836284544.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/fuvamokenewifavevonasad.pdfIn PDF document text
    • http://gewofudi.rf.gd/what_is_the_basic_idea_of_cognitive_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/how_to_setup_emerson_wireless_thermostat.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/88823336414.pdfIn PDF document text
    • http://zupugininifas.epizy.com/literutibobosipawetudap.pdfIn PDF document text
    • http://sijisizaf.rf.gd/premiere_rush_free_templates.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_off0000e355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE355 5188 bytes
SHA-256: fdb10bde8a773e3298b01cb8c8a186a96d15c3421b72725dbcf6766388538c32
font_01_sfnt_off0000f4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F5 10696 bytes
SHA-256: 684bc9f0d69407f23a2ae74b1f2d080630c86b109eda5c7e310d8df155d4e0eb