Malicious PDF — malware analysis report

Static analysis result for SHA-256 2954a7c98db8040d…

MALICIOUS

PDF

35.3 KB Created: 2021-06-19 18:48:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 96d9001b2586e390dc565f26727619e9 SHA-1: 4f608538fd5806261505ea3856e10ded1d00821f SHA-256: 2954a7c98db8040df288b8943bf55d53f205a9cf8369b7f13e7b6eda49ac9ddf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a URL promising free game hacks and currency, a common lure for malware distribution. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirect URL indicates a likely attempt to download a second-stage payload.

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/www-bandicam-com-free-robux-game-hack PDF link annotation
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/roblox-injector-pc-free_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/what-is-my-robux-promo-code-for-free_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-robux-today_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
font_00_sfnt_off00003206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3206 22228 bytes
SHA-256: c913e4c985cba085e8e586658e7b68159e217eabbda4d40558cefbcc5bc1eb5c
font_01_sfnt_off00006325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 19632 bytes
SHA-256: a90bb39b25c0987361f0dd43cf5b570ac3dec1b222341e2146909a9d8e2c4371

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