Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b12d2e43fa873d…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 13:43:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d2dc94eb747dae7f92592b54ac59fa88 SHA-1: 169c1ea6fe3219ba75bb1f6a52e59d051a390f1e SHA-256: f2b12d2e43fa873db838cdc6ea2726f203246619496c69020d5cf5b6d857836f
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/406889139/coin-master-new-link-free-spin-game-hack PDF link annotation
    • http://artistaone.co/userfiles/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/a-game-givving-you-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/tiktok-free-games_GM835599320.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/what-roblox-hack-works_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-mm2-hack-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/play-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/sysnaspe-crack-free-2021-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-muscle-simulater-cheat-codes_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-project-jojo-cheats_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_off00002e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3E 22796 bytes
SHA-256: 4e1ed29b06c9af06809226f972bb9f74f169778b1e8fcc7067607339643b9642
font_01_sfnt_off00006152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 18508 bytes
SHA-256: 79b9a27d0053041ad6906645aa4faf6565b34a6988944d829044528d7b2e3163

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