Malicious PDF — malware analysis report

Static analysis result for SHA-256 8afe9bc88787e6cd…

MALICIOUS

PDF

67.9 KB Created: 2020-12-20 03:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a45ae77207fb7cc1febe83f9d8f40f9b SHA-1: 106f047ec032e37f19ca194288757c8c1fb9faf0 SHA-256: 8afe9bc88787e6cd25e02b061402fe9b735f4b3e6029749e3e1bcf7863ca3504
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

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://traffnew.ru/wb?keyword=summer%20sudoku%20247%20easy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387033/normal_5f8fc369926a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417305/normal_5fc4aed32c330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5fb03e9e7f42f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5fb6d6df61e3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475866/normal_5fbf0d4d7bc05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f998db335ce3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f975e1c905b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381546/normal_5fb7128ae8c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f9195d4d67ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5fad1104e959f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489587/normal_5fadd2efc5082.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/9317da60-8080-4fff-96de-b87bf00b8bd9/nobavugudinemofabi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdd06487668226d2aabd076/1608320586016/metibuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2838bc72-4e83-42ae-b249-21a5e3d997ba/14354825975.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_off0000ceb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB4 5508 bytes
SHA-256: 405b1e4baa28f1552c11a900fa853eed779cf4521f26508926ed271c32839bfe
font_01_sfnt_off0000e164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE164 9952 bytes
SHA-256: fb7c1439b29a04f555b4d6768b234aecba9ccace1e0a8e950c887fc67d7f8344