Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0260ea75c8a419b…

MALICIOUS

PDF

69.5 KB Created: 2020-11-23 06:48:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7120c653aa1108746cca36a2c4370982 SHA-1: 2edf8dc91bfa5e54e5429daa07a281555c6ec3d4 SHA-256: c0260ea75c8a419b6df1e667ef5456319a4afc3984b8d5d8f48654fc6cc6f3db
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/123?utm_term=salt+of+the+sea+book+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_5fba789dcaf6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5fa66913881f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407070/normal_5f96d25d54bb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411231/normal_5fb34d0d080ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_5faee5c96c5bc.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/835afb11-6e82-4bbb-ac9d-6a71491157f9/3371284051.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/42244302050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a555f2e3-2e57-4903-aaac-a2ce169c5a1a/60563859598.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3aed7ab-489f-4b36-8e1b-d9c171fa32dc/55662877504.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/31605893487.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/duct_tape_sheets_near_me.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_off0000d3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FA 5340 bytes
SHA-256: 654586d0c5d2c4e4145f35d31a2bde0b77da1792d76494fbe18762cc2e615fbb
font_01_sfnt_off0000e61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61E 10312 bytes
SHA-256: 060a662240f0395d32a4ec0bd5b6e0282e32849966eb0f8a6b756ea66b94c9d1