Malicious PDF — malware analysis report

Static analysis result for SHA-256 740c3c1799d8c0f3…

MALICIOUS

PDF

42.5 KB Created: 2021-05-18 02:26:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 58bb6880000f8cdcd7b8b7491e8c859d SHA-1: 66e15b45b332e03c87346943e9e3d921a564ec42 SHA-256: 740c3c1799d8c0f32dc0f5bc502af425ab106c3275201aa10293fae4ca7c565d
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 0.9971

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/479516143/free-minecraft-java-account-game-hack PDF link annotation
    • https://www.imagevideo.info/images/earn-robux-now_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/robux-game-com_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-spins-coin-master-without-completing-offers_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_003_off00004baf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAF 24896 bytes
SHA-256: 9e8cf34915a86f09e2653689ed2e7906e8f584b193e89baada75b7ca91027eb8
font_01_sfnt_off0000845d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845D 18128 bytes
SHA-256: ad2a0848393495eee102bd1b36be1bc15cd9afc8a8e02692ab65cad6db8d4212

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