Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04e2e197c3ad788…

MALICIOUS

PDF

72.6 KB Created: 2020-12-26 15:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5f3d75c1a8b321ed3ddb1f8c3c920a21 SHA-1: b8cecc403fff4a961539c9f399413c5104b0f1ae SHA-256: c04e2e197c3ad78878c99da9ccc46622c2e34a4bc6cb94173b39496ff14aa31f
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, likely phishing or malware distribution. Although no scripts were explicitly extracted, the presence of an embedded URL and the overall detection profile indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=asteroids+tabletop+game+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411916/normal_5f9fbe1873cb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f87450745212.pdfIn PDF document text
    • https://cdn.sqhk.co/baxilutifi/BcZZfha/wumuvorozofuxotimawukozu.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/jemekigugazo_sosufoxof.pdfIn PDF document text
    • https://cdn.sqhk.co/dupeguwova/jhhb3hg/new_english_song_video.pdfIn PDF document text
    • https://cdn.sqhk.co/tezakagadol/idhcgcc/heart_photo_collage_template_psd_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f87307eee674.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421764/normal_5fc96ae508a28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c61c3b26-6f15-4fdc-bee7-ccca0e659e83/still_star_crossed_series.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/latilufalu.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/aqua_regia_quiz_2010_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/fuwajotulidiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef03d459-54af-4c10-8ef0-282b4e7d3381/13475002475.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_off0000dde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE8 5492 bytes
SHA-256: 743f7eb033e9e9573e6140e9630fdd0046e9c6a7bc8fb3e00233b2208d287aeb
font_01_sfnt_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 10984 bytes
SHA-256: 437f41c45220e91d456af09f1465e67df73a6e611c0a8a89bbf079c382348d4f