Malicious PDF — malware analysis report

Static analysis result for SHA-256 d734e9543c164937…

MALICIOUS

PDF

69.5 KB Created: 2021-01-07 02:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 889ec006ed80829f43aed22293717a95 SHA-1: 9a99e093f640a92df8df8b04aba6e8daf245fb19 SHA-256: d734e9543c164937fecee8be06bc83acb13323860256d6177d89dc597bf61b00
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. The embedded URL points to a suspicious domain, likely serving as a lure to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user, aligning with phishing tactics.

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://trafftec.ru/123?utm_term=questions+to+ask+potential+rotation+pi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5fa20cc777e10.pdfIn PDF document text
    • https://cdn.sqhk.co/mutobudenit/izGhjjd/slow_motion_video_editor_android_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368955/normal_5fad783218bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426277/normal_5fd9ad3791506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5fb28368702df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f9b857dab9c1.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/12174d77-0c35-4c06-8529-55f0f890fcc9/sevogojubinanirixojut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4dd07f8-c1bd-40cc-a2ca-c4f9972bae0d/pokemon_rumble_u_shiny.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a374b396-022f-4c95-8f1c-28589c8ffd47/definicin_de_recta.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/rakugivonatisude.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/cardiomegalia_grado_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea82cee-a7e6-472e-8a36-9aac5d6ccfa1/26361164980.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/mofovunal.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/69113674630.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/zosenakodimijum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d62d7be9-01f0-4f53-8ca8-1bf45251c738/dejufisewadanababurog.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_off0000d4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FD 4940 bytes
SHA-256: 0aa345559541d9a9eb98f1743f372176bfb2d121015025311c964d7d8256dd52
font_01_sfnt_off0000e5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DB 10348 bytes
SHA-256: 4fe67f05017d4fb3a2ef7a960cba68431820f14b5d72131e15d37292693128c1

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