Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41a601e2cc2cb11…

MALICIOUS

PDF

86.5 KB Created: 2021-04-01 06:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e99083c11b22a46f8456833b7624337b SHA-1: df20891e035f287d76abac60aef21b492bcd2fb3 SHA-256: c41a601e2cc2cb11f89cd1f0b4be51115e200cbd8fee3568e58ed7e37eea7102
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that directs users to a website, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the PDF heuristics suggest it's designed to redirect users to malicious content, potentially leveraging PDF vulnerabilities or social engineering.

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://seumenha.ru/aws?utm_term=perseus+and+medusa+myth+summary PDF link annotation
    • http://mysteps.online/html5_templates_bootstrap_freeio3tl.pdfIn PDF document text
    • http://wimudevereru.sportsontheweb.net/phobic_anxiety_disorder.pdfIn PDF document text
    • https://xikewewojan.weebly.com/uploads/1/3/4/0/134095915/resetitojivirako.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472763/normal_602805c433ab1.pdfIn PDF document text
    • http://ruvinowuge.scienceontheweb.net/acordo_de_basileia_ii.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/mutefod.pdfIn PDF document text
    • http://warokibujiz.getenjoyment.net/23569952942.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417309/normal_5fe1ea516e747.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465687/normal_5fed39ddca0e4.pdfIn PDF document text
    • https://misetibu.weebly.com/uploads/1/3/1/4/131438078/89f0d00d.pdfIn PDF document text
    • https://mogalarozo.weebly.com/uploads/1/3/5/9/135968713/9083176.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368756/normal_5feb98b30a7a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457563/normal_5fdf4bb3a931a.pdfIn PDF document text
    • http://kakorezikudu.mypressonline.com/100_bible_lessons_tagalog_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_600e6db630815.pdfIn PDF document text
    • http://mattelipsticks.site/sowalowebepudabozidepthez1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366400/normal_6006eb2c6fa94.pdfIn PDF document text
    • http://gitikirazidapi.medianewsonline.com/how_to_fix_lg_washing_machine_not_draining.pdfIn PDF document text
    • http://jujavekerubeko.scienceontheweb.net/exam_master_2020.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
    • 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_off0001063d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063D 4860 bytes
SHA-256: 9536614272127387fe5a2ac37a4cc1a109630bb1261e5e7c0f5a2cda636914f6
font_01_sfnt_off0001167e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167E 12208 bytes
SHA-256: ef50e743722df8466455ff1af0aa6be458c2408a5be378638af704582c5c938d
font_02_sfnt_off00013e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E2F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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