Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f0ab46ceefb5a3…

MALICIOUS

PDF

66.9 KB Created: 2020-11-13 13:53:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9e2f959f83a7e0182064db623508275d SHA-1: c37bd525e905daf4ecc8391bf448b2d539b4b3a7 SHA-256: d9f0ab46ceefb5a3157d8ef5ae916e2b922e8ab7b03b17fd6837b4df0b3c432b
154 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded link suggest an attempt to exploit user interaction.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=compostos+de+coordena%25C3%25A7%25C3%25A3o+ppt In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392199/normal_5fab6576e28b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_5fa1699692768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465543/normal_5fa7e1565fad0.pdfIn PDF document text
    • https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/5906262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384632/normal_5fa7fad500973.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/wamepenekazilu.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/319c4bd274986.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/zupenafud/xetadepagu.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/52550357709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe5b25f5-6a47-4858-bdda-d9a7b9ad33db/square_root_and_cube_root_functions_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac77c8f-4941-44de-a8c7-1108fa30ce7c/soduk.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_off0000c3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A1 5592 bytes
SHA-256: 3ef2e6e12bd07e91bb8b98218cd42b30732a10c92e00f0ea3cc3daa3c2fd16a0
font_01_sfnt_off0000d5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A8 13320 bytes
SHA-256: 20b97c27344025b629fff90e0056c4dcd211dab9ac0278426c35ec3d2c776749