Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a0da1d67807706…

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 17:43:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b11c2416551a4335ef2db985037d1fbd SHA-1: e52f0882f258ba3d4cd0816ee4eb18a2563885bc SHA-256: f4a0da1d6780770663d466afdd8205749d408d041b0bdd123989282688b9273d
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-hack-apk-free-download-game-hack PDF link annotation
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/glitchtale-battle-of-souls-roblox-hack-jult-31-2021_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/get-free-robux-no-inspect-fake_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-robux-without-veriufication-new_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-hack-roblox-if-u-forgoten-your-password_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-use-cheat-engine-on-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://rerempahanspa.com/ckfinder/userfiles/files/how-to-scam-on-roblox_GM431946152.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_off00003005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3005 22692 bytes
SHA-256: a8be33b37b159110942db2b82f47f27d2ba0df7c63b8931c19bcebfe37535fd6
font_01_sfnt_off0000629a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629A 18924 bytes
SHA-256: 38aff1f4ebc8d6a2cfc831d742e7ae34be9a6d1c0d894ae7a66b024f0bdab889

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