Malicious PDF — malware analysis report

Static analysis result for SHA-256 197fc826ac5906b4…

MALICIOUS

PDF

70.2 KB Created: 2021-02-17 22:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: effa11194c9fda86d858682de9ae15d5 SHA-1: 161a013e0ca210170a13bb133e45b18e2a236abc SHA-256: 197fc826ac5906b46da5355ff55f319b210710eac518e626fb7a444c2f3eedb6
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, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URL, 'https://baarspo.ru/strik?utm_term=why+do+gamers+eat+doritos', likely leads to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://baarspo.ru/strik?utm_term=why+do+gamers+eat+doritos PDF link annotation
    • http://fasodotujane.iblogger.org/angular_form_validation_custom_error.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_60206e2f147e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410952/normal_5fd0817bcdd15.pdfIn PDF document text
    • https://kikuwigew.weebly.com/uploads/1/3/1/4/131407235/4130115.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/7jjj2jg/rhythm_teacher_music_beats.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/cgfeiiw/tipopamip.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/bifLDha/50348608518.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420902/normal_6009a0d41120d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vegawududabuz.rf.gd/ethics_game_answers.pdfIn PDF document text
    • http://suziwifu.rf.gd/java_compiler_javac._exe.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_off0000d5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A2 5324 bytes
SHA-256: 54b6fd960da4b59415884c2ae0ba04d7a8f3c9739c0b9bd910f556b41329aa8f
font_01_sfnt_off0000e7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A3 10792 bytes
SHA-256: 3acba45b293507017c11ab6f9c442485f5e55212d3e48359973d2e6ca196f3b0

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