Malicious PDF — malware analysis report

Static analysis result for SHA-256 54adf8d19365ebd1…

MALICIOUS

PDF

82.4 KB Created: 2020-12-03 06:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 44a4f5a6112832f1eace387959782ceb SHA-1: df6e90c800774bb84d46a8ac758dc78bc36560f8 SHA-256: 54adf8d19365ebd15bddc25f1bd916330cb2b13da904f3ff08e076017b964d00
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, contains text related to watching a movie, likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/strik?utm_term=watch+bohemian+rhapsody+movie+online+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367275/normal_5fc04c540dbf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491445/normal_5fbe88d4833b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8f05667fdfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489422/normal_5fb25f90e516b.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/5fbf53bc173fb5383b991c77/1606374340656/silicone_free_foundation_stick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d00603a-092c-4bf6-a3e8-0bfd89fe4ed6/kixodade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcd78cc9-97ab-4333-bba3-fdca48517a96/tinenetiwejifozujoxof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d0b4a3bf4b14aba8c2a0/t/5fc62bfbf3de5e49b537bfd0/1606822910811/bulaxamuwakefujin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27182ef5-16e7-42e9-bfb9-7fb82edfe319/barbie_island_princess_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bcf565b-d364-4767-9b4e-96d3431d4bf9/dukusegukowir.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3ceaa24b06a7eb3118727/t/5fc7d5fc8927470b95c88c95/1606931966434/universe_sandbox_3d.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdee68e6d49a06bb560867/1606282856932/pamavezun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e60b24b06a7eb3ff207b/t/5fc14b1bfa04221c714f662d/1606503195245/asus_n13219_motherboard_drivers_free_download_for_xp.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_off000105b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B2 5708 bytes
SHA-256: e2f36d65277f716b5486cf9fc6097b0331140c37bb50569fb901093b98059fd1
font_01_sfnt_off00011901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11901 10348 bytes
SHA-256: f7464b06baead3a76edb926edee72620728e755b9542531ded05e586f8a2ef57

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