Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b66df4d127c95b…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 06:28:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f9e18ee5a374e516a889f7d62860c644 SHA-1: 2dbc1e0863b3dbe1c70e37920209cd1839b45194 SHA-256: b7b66df4d127c95b032af5430e66e116e7dc21927980c33af5b575f36dcfad2b
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/hack-para-descargar-roblox-game-hack PDF link annotation
    • http://doganov.be/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/roblox-hacked-client-download-kostenlos-deutsch_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/roblox-free-shopping-mod_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/make-free-robux_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://doganov.be/images/minecraft-free-version_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_off00002dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDE 22900 bytes
SHA-256: bc4408fa15d4b3aee420008343e7d2c729442c847a35dcfa5fc3477b0ca4bd26
font_01_sfnt_off000060ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EC 18792 bytes
SHA-256: 51722dbb8caa065dc3169188b6455f5f7aa1a1319a77b95d8c0ecaeadd5a01e4

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