Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b3a6251d17dbf9…

MALICIOUS

PDF

69.7 KB Created: 2020-12-17 15:41:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fa707af9b9b9b68f0fe8edbf64c854fc SHA-1: dc94e241602177458a315457f4416c63a31dbe2c SHA-256: a3b3a6251d17dbf98f216b32428399780dc5442ad0d27dbebc8602181061b154
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://gettraff.ru/strik?utm_term=united+way+suncoast+pinellas+free+taxes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5fb38ca96aeed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5fd689ea9f5e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_5f9f7301310ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451566/normal_5fa384c2a3082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495254/normal_5fbf602b2ccae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483837/normal_5fd84d2ac3625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_5f973636951ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414153/normal_5fcf313e5374a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_5fd626bb3f680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8fe4b8be2b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f86f5eb69511.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407988/normal_5fa03476681b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_5f99b4561337c.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/5fc0bc0f405d5340f328bb30/t/5fc0ff9e08845d0924adb399/1606483870758/powikiwadarisoxejerefe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc2ec54fa04221c7180a2c0/1606610004639/8724337178.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce949bf613214984216d34/t/5fd062dcb8bf0379e6099af2/1607492317359/freshwater_dragon_goby_for_sale.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17A 5400 bytes
SHA-256: a698125a35f0e48c46ed1e0348f1e2d1d3f481b57c72c7e9f14ddc1a4cc939c5
font_01_sfnt_off0000e40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40E 11172 bytes
SHA-256: c24be5cd1bbc263d5f2f0361837c978a7aa269b4be2748e6d3006f4392afb7a5

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