Malicious PDF — malware analysis report

Static analysis result for SHA-256 c789c344d89dd4d4…

MALICIOUS

PDF

73.6 KB Created: 2020-12-17 05:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e746dc1525e88cf210b2936371be7f44 SHA-1: 72f8b9c5e49b3b96e3b74f1f7e4e685353424bfd SHA-256: c789c344d89dd4d41a87a7f6e835de0a5bb90e42018ca02f42d1f321414c6bbb
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to contain text related to car sales, likely serving as a lure to direct the user to the embedded URL.

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://trafficel.ru/123?utm_term=1968+dodge+dart+for+sale+ebay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368746/normal_5f95b2301fbba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_5fa41e2c4ffa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404123/normal_5fc8a10617b50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416500/normal_5fc7f101a9c36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_5fac10d258472.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/xulepiwa/atomic_number_and_mass_number_practice_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f169085bf90c0efd4cbb/t/5fcfe8155fa26f4a9ee48e87/1607460885674/29876319529.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/practical_english_usage_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/togokuvibiset.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc37f170b6b03258f45d436/t/5fc4c2053570fb44d198c082/1606730249433/challenging_trigonometry_problems_grade_12.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bb0acd1e280355f54485/t/5fcb66ce11c29807e6d87c14/1607165648982/lomukefuwolimonefisutiz.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/banking_system_in_malaysia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1833a97599144ebfdcbc/1606293557372/32219579989.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/56253205596.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/25241991283.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_off0000df3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3B 5780 bytes
SHA-256: 9b8d5513fc58789639d3bbddb67bbe82da886db7c1a532c5c67a17d97a56a4be
font_01_sfnt_off0000f2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EF 11164 bytes
SHA-256: 72f9955e243bed3124becfb00992e31a4af14f7fc0708b49e2eef9ec2678d9cd

Open this report in the interactive analyzer, or submit your own file for analysis.