Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd29b87704bfad5e…

MALICIOUS

PDF

84.9 KB Created: 2021-03-01 18:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 8f23f797f4f8d1722761f6ee03d645f7 SHA-1: 3ce14d9f9d69df4cae378afdced2860eab8acc4e SHA-256: dd29b87704bfad5e722f110b5c0fac75b98437299659268cc5b90311d479861a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit user interaction via a link.

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://mezovuduw.ru/aws?utm_term=how+to+reset+jbl+t110 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408587/normal_6032a047cb7aa.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/JuhdjfA/dragon_quest_5_battle_music.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxisilogok/Jhejhgj/teaching_assistant_qualification_requirements_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_5fdb99c06b8e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499651/normal_601d17af18fd6.pdfIn PDF document text
    • https://cdn.sqhk.co/daguvemet/Jhbhaia/janowuvime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_600e320d5f122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_60307dc4300ea.pdfIn PDF document text
    • https://cdn.sqhk.co/pizokifuxe/hdhcSgd/vediri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_601432bcd70c7.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/wulotugadag/12810882676.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/97018464413.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/how_to_check_google_maps_timeline.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/can_you_use_refrigerator_without_water_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/pak_navy_jobs_2021_for_female.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/pumejamipomakodetuxoguv.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/xuruk.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_off00010e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E83 4932 bytes
SHA-256: b6b766bbfb0324739c3360ae39093dd228eaae5e91ef0a23ed8afcfd10d884c0
font_01_sfnt_off00011f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F71 11568 bytes
SHA-256: e3d711d3e82509cd71fe15fb7faa39a08f6db70e14806578b82db75b9dbafb7b

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