Malicious PDF — malware analysis report

Static analysis result for SHA-256 acdb506cb128b715…

MALICIOUS

PDF

32.9 KB Created: 2020-10-30 09:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e736f95945b9b443c83ffce24c7a0e31 SHA-1: 1b91094a96cb761d96ceb09beec3d44635858ebc SHA-256: acdb506cb128b715155362f855c7e33bb716cfe2479a79e6f8701759a28b9163
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The ML classifier also flagged this PDF with high confidence. The embedded URL points to a potentially malicious domain, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/123?keyword=beautyrest+studio+11+twin+mattress+size In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5f89049b72ea2.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/malada-biniregokase-joredaletefax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393179/normal_5f9234aa5a740.pdfIn PDF document text
    • https://gasipepimajut.weebly.com/uploads/1/3/4/3/134367512/3472010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f8a42da8066f.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/mapuvodadoloja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388424/normal_5f91248a0bdb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f93825f10572.pdfIn PDF document text
    • https://woruvewuz.weebly.com/uploads/1/3/4/4/134400058/lofubedufok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7628/1021/files/horse_fence_rdr2_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/96800299511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5dadda9-4f3a-4bf5-a307-73bcb3bb9496/1988_holiday_rambler_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e74e8ddc-e1ce-4a07-ad49-702243718669/divesajalodozalud.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_off00004294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4294 5284 bytes
SHA-256: ab455623397ee0cbe6810b836fc3b7e044173ea558acee27bda5b88c0e87e147
font_01_sfnt_off0000549c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x549C 10080 bytes
SHA-256: a907e54ce93fec7b3d3f709ee0e97be91555e8ad01166191359cf5111ddd9340