Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36892b133087b6b…

MALICIOUS

PDF

68.3 KB Created: 2020-11-22 13:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ba5c0785bd4cbeeb3f255919b7710283 SHA-1: 2172ed9ee28bfa8e62f04960dcc3cbfa940965d0 SHA-256: c36892b133087b6b907e397690b6e5d1aa72aa1c893ec67503ce5ba5751d2bf7
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 0.9981

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=burbank+movie+theaters+amc+6 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387229/normal_5f9f0fe065c11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f8b4a44b64a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5f9c69fc12fd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5fa16e531c53a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386620/normal_5fa6b54fe215a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f875e5925f0b.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/a47e9179-de11-40a1-90c1-06237c75ee6f/facetime_auto_answer_on_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/claw_gauntlet_dnd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5094514c-1458-4ce0-b596-1fc7ef41dd8a/46393262270.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_off0000cca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA2 5476 bytes
SHA-256: be64545bb43e7ea6bd004b2c4a924086cb324d29bb9181cfc065a495742cedc0
font_01_sfnt_off0000df20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF20 11204 bytes
SHA-256: 52457d80f3e4a35da0dce1e993b9d308f6f688f2eee8842b3e38d88f6218c65f

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