Malicious PDF — malware analysis report

Static analysis result for SHA-256 26cedaea6dc62544…

MALICIOUS

PDF

69.8 KB Created: 2020-11-22 00:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e11be910682377c16ff3794cea5530ee SHA-1: 801408f965264379f81f54ed8927726e7303f4d3 SHA-256: 26cedaea6dc6254483e70d212e8c862223c5ddea1afbeff5831132bf62e44e66
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. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL, 'https://trafficel.ru/123?utm_term=cartoon+quiz+answers+level+1', is likely used to redirect the user to a phishing site or download a secondary payload. The document body, though partially corrupted, suggests a lure related to 'Cartoon quiz answers level 1'.

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=cartoon+quiz+answers+level+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5fa37ddd6ac63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_5f8b948211538.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://s3.amazonaws.com/wapabefizosumi/56106685343.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/recorder_of_deeds_st_louis_county_mo.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/71008964435.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/92193030284.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/13507380229.pdfIn PDF document text
    • https://s3.amazonaws.com/kalufizefem/76300953046.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/oconee_county_schools_ga_salary_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/pathfinder_best_archer_build.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/core_workouts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb2d68e3-55a9-4051-b812-55030a66086c/40808398152.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/56120967023.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/xuwubazukijasej.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/juvojemujebakuvikenogi.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_off0000c6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BB 4964 bytes
SHA-256: 0e9886957ae6d90034c13f0d36419be939dcbb029349d512cc33dcd03993d0f4
font_01_sfnt_off0000d7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D7 10676 bytes
SHA-256: 6e50ddeeab605df5221fdd462bf1709cf67bcb1f41766ff5934f80afca36db30
font_02_sfnt_off0000fc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC44 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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