Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac3ed67eb3772d6…

MALICIOUS

PDF

45.2 KB Created: 2021-05-11 20:34:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2cee476d66c5b2e78d56311750ea0f0b SHA-1: b6391a2180ad2c493fa2887e3c6555fce78fe86a SHA-256: bac3ed67eb3772d6cf4d48efb484da857e20ae435cd038de5fae119c3cd7e796
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9551

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 https://netcdn.xyz/app/406889139/coin-master-reward-link-2021-game-hack PDF link annotation
    • https://studiodegaetano.it/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/master-coins-free_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • https://studiodegaetano.it/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://studiodegaetano.it/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/roblox-scam_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://studiodegaetano.it/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://studiodegaetano.it/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a3c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A3C 25400 bytes
SHA-256: 6025197bafc3c56c7a4f9ce79141bef89829fc30f84e53f6fcbfe25e89b45253
font_01_sfnt_off000083aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5C 18456 bytes
SHA-256: 6040a5d317e0c15c3b91341419c6951bd8a72d731c40e3937b88b452a10d0332

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