Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f14bc80ada6e0d…

MALICIOUS

PDF

35.0 KB Created: 2021-06-18 14:29:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 31ed20f857f0e10a6bbf079a2a54c162 SHA-1: aaf4cdbd8a91e8189f03b53d2a2fa0caeb1e93a2 SHA-256: c4f14bc80ada6e0dea17fbd13a384f70397001d60f6b8934a5d21538b256179a
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 0.9980

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.co/app/431946152/free-robux-no-human-verification-no-scam-game-hack PDF link annotation
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/roblox-got-tallent-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00003194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3194 22240 bytes
SHA-256: e799a63109fce83685b2b5558fb30c23f6b2a3e580229ec06211cdff132cf952
font_01_sfnt_off000062f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 19336 bytes
SHA-256: cfc33a60394f4e57ff4f6de9bc52cf338bf4499108cb38d7ca5aa63608440c02

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