Malicious PDF — malware analysis report

Static analysis result for SHA-256 5662ef5ece88ef9d…

MALICIOUS

PDF

69.1 KB Created: 2021-01-11 11:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ce91944468b4bc2be420c13471b03bd8 SHA-1: 74beb7800e226e2bc581db5d76d8470869425774 SHA-256: 5662ef5ece88ef9d894f14499d3273a5765c2e5bff5e0430bff83afe47d84eb2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF file is flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains a lure that instructs the user to copy and paste content into a command-line interface, likely to execute a malicious payload. It also contains a link to known malicious redirector infrastructure, suggesting it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://gettraff.ru/wb?keyword=transparent%20screensaver%20ubuntu In PDF document text
    • https://mepaxekedin.weebly.com/uploads/1/3/4/5/134514716/1804698.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470409/normal_5fcb47493af8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419423/normal_5fb54eef77b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_5fb6bbd8d7930.pdfIn PDF document text
    • https://site-1173990.mozfiles.com/files/1173990/download_hills_of_steel_2_mod.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kekikefuwu.pdfIn PDF document text
    • https://site-1204729.mozfiles.com/files/1204729/princess_coloring_book_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495059/normal_5fc4a893ba6d1.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/H01yojc/zoxuranalonamewitopaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454547/normal_5ff11d701577a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482228/normal_5fae7e6bc9f7f.pdfIn PDF document text
    • https://cdn.sqhk.co/gumakulex/wihidfq/49561239489.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_off0000d210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD210 5044 bytes
SHA-256: eb6bc862c0aefeb85d1f2ce7c0884c2f1440f3b8e5ebabcb6abfa9dc4a1d767c
font_01_sfnt_off0000e345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE345 10836 bytes
SHA-256: 61d1cdbfee8ee81eb1c9fdb63c0d4640a01db0fb52313b9782992e9891367727

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