Malicious PDF — malware analysis report

Static analysis result for SHA-256 684541e57a1aee9f…

MALICIOUS

PDF

32.8 KB Created: 2021-07-03 18:27:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c9b82bc64135a8c6c7b2722b4b5316ff SHA-1: ec5da2c01c4c09df9b3aa84287e880f052bc9fb8 SHA-256: 684541e57a1aee9fe4c83e733edb0e6058e3d5f0749f1e900b3fe798012b9fbf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/431946152/jailbreak-roblox-hack-game-hack PDF link annotation
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/roblox-hack-scripts-for-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-robux-generator-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/open-coin-master_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/roblox-old-version-free-download_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/village-coin_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/pokemon-go-free-stuff_GM1094591345.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/we-wil-giv-bak-the-bux-yo-roblox-april-hacked_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/boku-no-roblox-remastered-money-free_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/800-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/invicibility-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.clooetherattorneys.com/uploaded_files/userfiles/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B92 21884 bytes
SHA-256: 4161e636323215e9bd7d4b3604f9f4fb754cb5d887f350e5c9196267e272f3ea
font_01_sfnt_off00005bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC2 18944 bytes
SHA-256: b440c48c3f289b909ed34f2eee2f3b6fc5dac76bbfa3721c7bf6b2977e88f8db

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