Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eef4902507c108b…

MALICIOUS

PDF

66.6 KB Created: 2020-12-22 02:01:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: be68c200eac636f570898c77d654ff10 SHA-1: 76355938767fd832732e215661b145fd607a510e SHA-256: 3eef4902507c108b64d39e717a331e04b626398e09a3fd568a9b3abc1a2845c6
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 0.9980

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://cctraff.ru/strik?utm_term=head+ball+2+hack+ultima+version In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446489/normal_5fb5707c1a65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490001/normal_5faf6f2f9b381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fd680d5cdf6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450730/normal_5fa2d82ae65e2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd131452f90b7fe52ecb/t/5fc15d88f81c9a2a0cd5365a/1606507913501/8969183016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/155521af-ac91-4964-b338-093f513b02a7/8468963907.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc0eca03f75b16643f57ec4/1606479009578/59353081890.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4dea13398ff7515474161/t/5fcafc016fd93023bcfcdf57/1607138305664/6146194933.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce6ba8564f736a5832ea25/t/5fd070e43364176a125c8a8a/1607495909359/principles_of_management_textbook_mcgraw_hill.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_off0000c893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 5536 bytes
SHA-256: f18c5d4ab20eeb99a642139637d86f2d91a215858ca5260653ea340ec24c3bd6
font_01_sfnt_off0000db37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB37 10212 bytes
SHA-256: da2e06007ed4e7a173120853481a0c76e44d4b6c78b9fa154eb3d4df250de358