Malicious PDF — malware analysis report

Static analysis result for SHA-256 357551c499663804…

MALICIOUS

PDF

61.1 KB Created: 2020-12-05 06:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5f3f953665ab52e2744c5b39862b049c SHA-1: d83f39184a8c5eb2268ebf6ce7f8efcab8318994 SHA-256: 357551c4996638043a028f7a18cc1e6e3ac898d75bc4ad4a8e1035a049bf750e
96 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 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 0.9996

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=john+taylor+gatto+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5fbc2d4236199.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/a38b4d9c-4ca2-44fe-b713-5480b0396d34/wemoxoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/sivafasiniwe/ccw_permit_lake_county_ohio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97952e59-5782-4673-90fe-00cb4a107f9e/fitabefopamonor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0eeb87-40d3-4857-97c1-5970f686626a/95369262465.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/best_annotation_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a959a957-cb27-4083-bfaa-21037639b21d/22767740668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd70fa96-fd3d-4bfa-a1b4-bc6612340833/93213346951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd262fe1-4155-4913-b653-2ab3c368956a/bay_port_wrestling_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b73c4d33-64bb-48ce-880d-b349e21a6320/18299724004.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7bc1d6-5a08-4b2f-b1ca-1f347a21bd3d/pasafegikosoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e8f74a-7249-4bf3-b6b0-5e53227169da/40133759567.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc506b4e5c7695ca9b60c25/t/5fc54a01e6d49a06bb415424/1606765057772/acs_voucher_daycare_bronx_ny.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_off0000b141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB141 5308 bytes
SHA-256: 4ff764e23dfae4d25a03cb327bc6c6d9a1f55f54daa68895e96901bbf52d25f8
font_01_sfnt_off0000c364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC364 11316 bytes
SHA-256: a26f062919de209443b96f7401f1f2aaf78b6ac6c536d2566bce7eff8f43bef8