Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67f1e1de51ce594…

MALICIOUS

PDF

65.1 KB Created: 2021-02-20 10:17:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 992c03a5476f2e16115c95ba13e9e824 SHA-1: 0e8714d2559c786ed71a6c0160c744612f62299d SHA-256: c67f1e1de51ce594590a08dddeac5b08726aa62faab0ac077b6ba713f8cc7303
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a phishing site disguised as a bill payment portal. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious external resource.

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://bologen.ru/wix?keyword=gettington+bill+pay PDF link annotation
    • https://cdn.sqhk.co/pixafosabow/s8a5aie/85271917119.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/ctCEHje/padugimigaxejiwogena.pdfIn PDF document text
    • http://pegajopakazo.22web.org/teddy_bear_teddy_bear_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/hchbhjU/miami_police_crime_vice_simulator_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/aVfkhV9/12780015040.pdfIn PDF document text
    • https://cdn.sqhk.co/voguzasijur/gezSjav/45896067838.pdfIn PDF document text
    • https://cdn.sqhk.co/vatepasoxi/ibZk9FV/cute_wallpaper_for_iphone_7_plus_hd.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/donarepemi/characteristics_of_information_system_management.pdfIn PDF document text
    • http://temekem.epizy.com/website_templates_free_for_blogger.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/tangled_hd_wallpaper_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/1696296365.pdfIn PDF document text
    • http://kusegipe.epizy.com/71628464936.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/backup_sms_android_to_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/sozuralebufumogemoxutal.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/business_plan_feasibility_study_template.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_off0000c49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49B 4988 bytes
SHA-256: 08334b128b6080e9622db6408d9aba71615e3f19f19e7c652fb086580930a14e
font_01_sfnt_off0000d5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B6 9992 bytes
SHA-256: fafb46f58aeea82fe3a7e3c869f701c02c855c732660ae660ad9157342173d86