Malicious PDF — malware analysis report

Static analysis result for SHA-256 856abba5bb760168…

MALICIOUS

PDF

48.1 KB Created: 2021-05-13 18:02:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dcca612d31fa3aaa0fc7e15e231e74d9 SHA-1: 09ecf3f19017f48522fa879d5a3ea9fe50dccbe1 SHA-256: 856abba5bb76016842010eed318a0808c11fb794aec998e87130e51912a74f6b
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 0.9013

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/431946152/how-to-get-free-robux-games-game-hack PDF link annotation
    • http://ivanflores.cl/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://ivanflores.cl/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://ivanflores.cl/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ivanflores.cl/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ivanflores.cl/images/robux-adder_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://ivanflores.cl/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://ivanflores.cl/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ivanflores.cl/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ivanflores.cl/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://ivanflores.cl/images/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://ivanflores.cl/images/i-want-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7A 27916 bytes
SHA-256: df199e25b1f78437eb6d770c987aac5ae0f3d33fd1c8c01160cdefd9545f2072
font_01_sfnt_off00008b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000983d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x983D 18768 bytes
SHA-256: f0658a260a8345a08039bbf50682235c712e1d6bfd9b3eebd82ad720f29012b5

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