Malicious PDF — malware analysis report

Static analysis result for SHA-256 0594e345792603d1…

MALICIOUS

PDF

73.0 KB Created: 2020-11-10 18:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 35a50aeefa00f87b74eebbbace17a7c0 SHA-1: d87820239106dc90d0dd466972262c99be5e721c SHA-256: 0594e345792603d1a095e85baf7ee70c6c59435d2190dd60f0d20a78dd2459f3
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a clipboard-command (paste-and-run) lure. 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 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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?keyword=80th+wedding+anniversary+symbol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382192/normal_5f9207c53f09e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410989/normal_5fa3c23facc4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f9f9e0703f2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_5f9108ce26d2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425514/normal_5fa401c37d886.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/list_of_ch_words.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/67835263781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26765665-bfac-41ac-bec7-f0c49d710a23/39022690458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d5f2f3-41b7-4ff4-ac34-ca65e9e086ee/34890867358.pdfIn PDF document text
    • https://s3.amazonaws.com/pukasojalu/11596846223.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/siruleb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c958ca8-dc97-4d66-96f2-f4010d9e0bea/kedomopazalibazaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1641227-9b40-4509-8987-15bc9f0b5505/bajujujizemanevobix.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/96943432018.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/81768630269.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_off0000dc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC74 5872 bytes
SHA-256: bd3e1d18c0583a2e63e65f4c8d59c9f6ccfe0fc752bcf93e98db286c771a1600
font_01_sfnt_off0000f05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05C 11368 bytes
SHA-256: 5bb4f47a6b63f60eec6d77ec8e5cc1f59fb644c2081b24b2123989913b8ae0e1

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