Malicious PDF — malware analysis report

Static analysis result for SHA-256 530cfdcd6dfc4c78…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 22:55:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e20921c73069e46c73d2fc0cecc3b14b SHA-1: 4883bc2658f75fc7e9adbc17f0a5b0f147acd47f SHA-256: 530cfdcd6dfc4c784a0f51bebf17ea0026652838116dc28dc6202c27811c94e2
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.tw/app/431946152/how-to-hack-roblox-jailbreak-game-hack PDF link annotation
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-dugeon-quest-script-hack_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-free-coins-on-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/whats-robux_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-make-my-own-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/obc-free-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-no-glitch_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-pro-hack-script_GM431946152.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
stream_002_off00002f1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F1A 22432 bytes
SHA-256: 406267ab1f5d9a592ffee9b5aafc69c306df7b042c4186e5a4a5f2f0266228a7
font_01_sfnt_off0000611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611C 19104 bytes
SHA-256: 696a7a1a31584406119b272d138aa3833d155dde635b1dee8888fecfa5e4f887

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