Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bcaaa4e9b76b46f…

MALICIOUS

PDF

61.6 KB Created: 2020-12-22 07:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1dd23401dc2b3bcf86a6114cde0090c7 SHA-1: 184279387d7c54889c5302d0de67694952cc911d SHA-256: 4bcaaa4e9b76b46f81169cb69d3640d22d7256b7c1238b9bbdfe00990d4c03c9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL, identified as malicious by ClamAV and a machine learning classifier. The document body, though heavily obfuscated, contains text that appears to be a product listing for 'Sig sauer m400 tread', suggesting a lure for phishing or malware distribution. The presence of an external URI points to the likely distribution of a second-stage payload or redirection to a malicious site.

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
  • 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://trafficel.ru/123?utm_term=sig+sauer+m400+tread+in+stock PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4498834/normal_5fc6fe4891d4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386613/normal_5fa191313e968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f86f7a9360ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_5f907c2952545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5fc71c2cb5f62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381101/normal_5fbc2e435aff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5fdb54cb125af.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/5fbce344be7cfc36344e8aaf/t/5fbf48fb9b1ed03538d10d01/1606371580240/toren_collective_portland.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2834392c50b1a1e81b518/t/5fd1b7d10f163860c7ae20ae/1607579601992/dompet_crypto_indonesia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd52f8c2d4633280e99069/t/5fdd71b9463d3b6c6f1f9af6/1608348089980/bleacher_report_college_football_2019_predictions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c61a1b84-bfc1-4656-920b-c57bf1438065/82697761680.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4a28139af037644e7e6/t/5fc1b0323570fb44d1423619/1606529075721/43658734499.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e35cc750a3b5a0882c0/1606225465887/guzalobojawefefox.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe0042f51e6b539731e500c/t/5fe0876751a86c1b6c55b261/1608550248029/35132485345.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd44de8580e136cdf53fe3/t/5fddf4fafb7de13a644bd589/1608381690726/irs_form_ira_deduction_worksheet.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_off0000b3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3FA 5624 bytes
SHA-256: c95ae901eb22dcc1e15059f6f21ea490e7ba2e5d27cde8502fc8b29c70182a5b
font_01_sfnt_off0000c718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC718 10088 bytes
SHA-256: 3107a58c9318ec7fa8cb6d93d31f6f611899b50eb881c7e63b79956eb93559f0

Open this report in the interactive analyzer, or submit your own file for analysis.