Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebddf2b101644816…

MALICIOUS

PDF

69.5 KB Created: 2020-12-24 16:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d7ff2b39c1108b118713ad704cb00ae3 SHA-1: 1755b1e7a445416875f25ea663f0b925031973e1 SHA-256: ebddf2b1016448166fecfbde19524f9da1177373c93c8b5faf26db547d031a58
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to 'traffine.ru', which is highly suspicious and likely part of a phishing or malware distribution scheme. 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, likely for credential harvesting or further payload delivery.

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://traffine.ru/strik?utm_term=slices+menu+hastings PDF link annotation
    • https://cdn.sqhk.co/xuvomuvugu/jhREgZ6/fofupiresaxifavulojokaj.pdfIn PDF document text
    • https://cdn.sqhk.co/maputaliki/9gjCUha/kid_birthday_party_rentals_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417205/normal_5fb3012c6bccc.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/ijagSHc/56271323917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448103/normal_5fa84f3fd3d12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_5fb3621518694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_5f9939ab078fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453579/normal_5fc67b5a6e9f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404741/normal_5fde1ff2e5db9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_5f9ad7895e20a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453103/normal_5fbeebb3c75e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5f9e047c592d8.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/bbc58025-8b31-4750-9aef-57020ab442d1/22623035967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48826637-d1c2-4eef-acf1-9853954c96c8/49258241187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53fa43e4-5fee-44e8-9a4f-f24877f918f4/43303113344.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC1 6072 bytes
SHA-256: 4387eccf8d1ceb84b0f42c2c46a9343d0699c464a5696acdbba2908fcc35001b
font_01_sfnt_off0000d3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A4 5220 bytes
SHA-256: 9d14ff4410e7207c2efd1f6568044dadef4a85a17c49b0e9400679bdcb217812
font_02_sfnt_off0000e53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53B 10500 bytes
SHA-256: 494ed12c6428898fb944249515e1c4302aaf87ac48b53b76edec2281b46e5deb

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