Malicious PDF — malware analysis report

Static analysis result for SHA-256 d36c84a34e030f86…

MALICIOUS

PDF

68.7 KB Created: 2021-01-16 20:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9abf6fc627c19ca6eb272952f0cc8560 SHA-1: f85290e9558e8c0e6f91905a7c9409f353b34427 SHA-256: d36c84a34e030f86b462b72a8cbedda2e921069f9f07c49648745441bf2aea19
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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/wb?keyword=pro%20football%20playoff%20games%20today PDF link annotation
    • https://cdn.sqhk.co/mugejufunij/mI1hgji/democracy_now_apple_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409806/normal_5f92fa85c1f0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378383/normal_5ff8bc4257e53.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/xekusoxu.pdfIn PDF document text
    • https://wevupifusa.weebly.com/uploads/1/3/4/3/134356286/849142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_5f9f91a682757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379611/normal_5ff4889c4de7d.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/cgjjihf/lezuwolegabutagugidim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469374/normal_5fcc9cf628fa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f90dbfa3831f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cf21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF21 5604 bytes
SHA-256: 75ff0dbb0e2d97186cd776d48e01e9f4bbf083a4212107c1a5dee36fcce5d100
font_01_sfnt_off0000e21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21F 10628 bytes
SHA-256: adba6e893377375183a27e1f8860f252ac384841c426b50e23f820075754797c

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