Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8981963ff7ce858…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 17:46:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 94e2743f315e17eb7bba5107ce4c605e SHA-1: 2e8892761ef07573c1db02710c018d112bdb10ce SHA-256: a8981963ff7ce85860d68e084e4509daccd74957ca535a46753c471723beb6bf
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/give-me-free-robux-game-hack PDF link annotation
    • https://adirp.id/upload_data/files/how-to-get-free-robux-easy-1-munuit-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-robux-without-email-address_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-cheat-in-robux_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-building-tools-hack_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-hack-roblox-jailbreak-money-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-cheat-engine-walk-through-walls-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-bee-swarm-simulator-free-egg-codes_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/pubg-uc-through-easypaisa_GM1330123889.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hack-de-roblox-btools_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-free-download-no-sign-in_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/is-minecraft-java-free_GM479516143.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_off00002ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22136 bytes
SHA-256: 47b64b72888beff3263dae12d5492e9f034eb3e7eefbe35804555b87377119e9
font_01_sfnt_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 19144 bytes
SHA-256: 49caa2a42633a23caf301bb0fa3c0edf25e4e3c2cd040ebd05f96fd152ca8770

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