Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3bd839a8ed2d62…

MALICIOUS

PDF

34.5 KB Created: 2021-06-23 09:53:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: efc3bb841c9f30df8d294a6ebc0de75e SHA-1: df7066200a170ae856353de76adccdf955f5f1d9 SHA-256: 1c3bd839a8ed2d62c19a4fe24af8c68aa756bdcc85d3d461ab9592cb52d17396
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/free-promo-codes-for-gear-in-roblox-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/simple-game-hack-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-project-pokemon-dll-hack_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_off00002f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F54 22372 bytes
SHA-256: 5b4aee42d6afd09e7899f8de73dbf511c6cf51e1278dbc29710ebdbb546466b5
font_01_sfnt_off0000617b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617B 19236 bytes
SHA-256: 9803e59252dfac70b41378882c4fa899841faae5a88f72637b2c76c36faa6e6e

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