Malicious PDF — malware analysis report

Static analysis result for SHA-256 584f3b02030c6d76…

MALICIOUS

PDF

108.0 KB Created: 2020-12-03 05:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: deed8fd423e35f4fde1c751ea9a2d08b SHA-1: dd7b5c0c8e92c5872575b50f70c66c63e57af23d SHA-256: 584f3b02030c6d76c9ff3bf20b0754d503809dabd79fce9aa571abcfdc2d1c81
154 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/123?utm_term=what+have+you+done+to+make+your+school+or+your+community+a+better+place+essay In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_5fabca2355501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384048/normal_5f93f3d4a7e48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505839/normal_5fb8d5e4ef24c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f934e74cd822.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/rawesaragegugar/kerigusijirokidimewagaga.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5dbc3570fb44d1fa2956/1606376900505/vaxixemobamogavaxuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40e8bb12-366e-4bb8-80ec-3502e4a26530/7178037279.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d9d28787e879896bb85a/t/5fc835a2217b3604edd3f480/1606956450756/nivigixenatuxojotog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0bddb3-530d-4e4b-8f48-7b2894f83152/27336769501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c04b21-9c48-41cc-9937-d216eeafc650/ufc_tickets_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b3648c-814f-4ccc-a315-843c5d1fbbec/75180299505.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_off000168eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168EB 5692 bytes
SHA-256: 3409d41e354431b1d9eadb51532df1d549121f13af92a4cd6d4612883c326e5c
font_01_sfnt_off00017c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C2B 11272 bytes
SHA-256: 4679faa45a37a6254b77675646162fc20febe98ae63e8dacb80148ffabdc9203