Malicious PDF — malware analysis report

Static analysis result for SHA-256 1798fc79162ac25c…

MALICIOUS

PDF

45.0 KB Created: 2021-06-07 23:17:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 12de5218d683f77404e41cdd987c5eb7 SHA-1: 85b05a0f4c66c8d661de9b4a0671a60fa28bf0fa SHA-256: 1798fc79162ac25cc6d4fa8da97cc13a9f316887ddcb6985a8f171417698999c
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 0.9865

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.tw/app/431946152/free-item-catalog-roblox-game-hack PDF link annotation
    • https://www.stayon.no/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-get-free-robux-2021-website_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/codigo-oculto-roblox-hack-roblox-tener-robux-gratis-2021-noviembre_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/free-tiktok-accounts-with-2021-fans_GM835599320.pdfIn PDF document text
    • https://www.stayon.no/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.stayon.no/images/earn-free-spins-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F76 25868 bytes
SHA-256: cc47c373da38e9cee5a05a85f3220868d704ba6e762bd9a966110fcce82953b3
font_01_sfnt_off00008b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B96 18828 bytes
SHA-256: 2d68d7288a1f2069990c41aadcd3048e18769fbd6d0779c3758f428acda7112e

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