Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6bcd9f6796d40a…

MALICIOUS

PDF

66.5 KB Created: 2020-11-18 07:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b47c082d96206853f3777f4e3b1012fc SHA-1: 9e0c5c955e69ff0ce3c4c04f8317b75cbeabaacf SHA-256: 5d6bcd9f6796d40aa9c9cbf53d16f98ddd8446d9d37edc948e89301a0eaed77d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9883

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://traffset.ru/123?utm_term=baseball+bat+dnd+5e PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5f91c3325d3ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5faf4c325c899.pdfIn PDF document text
    • https://rirusiwox.weebly.com/uploads/1/3/4/2/134265342/jaxowafitup.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/resixexi/luburazixibukuwamagix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a4c308-5801-4716-b293-33ceb659c97c/wimbledon_live_stream_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/sanekufiwumafo/83748204722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fca931c-f518-4111-8007-dc86a620a58d/29476353951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92a27d77-d0f2-4178-87f4-5643c723e948/vufiregugupiwejezovaj.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_off0000c8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A7 5036 bytes
SHA-256: b47b0fcec51f4aa7ed6f77e852e1a4967e8bec18ea9e27417fb6941df92f1d64
font_01_sfnt_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 10620 bytes
SHA-256: 7e90257ecc89dfc4c45220c7cd6cf8bd7f98b76cc4d74485fca228b36404efe2

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