Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3347dbd2651f9e…

MALICIOUS

PDF

48.9 KB Created: 2021-06-02 21:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e926250bce3b3b5f8d7aeb6ab7761e99 SHA-1: 98a25a36b5cedc19cef09fa838b8e583ba6dfb9d SHA-256: cc3347dbd2651f9ecf77b445d8f307667470151eb7863f4e5d8c937f8074b67f
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 0.9796

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-hack-assassin-boxes-roblox-game-hack PDF link annotation
    • http://dismarinamt.com.br/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://dismarinamt.com.br/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53F5 26840 bytes
SHA-256: 84a1cd27ba10af0eb5a3931a75834633e7773e2476ac33700bd9be8d897d13fa
font_01_sfnt_off000091b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B9 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA3 18468 bytes
SHA-256: f7210f3996b3d06ecd5771719045110d366391aa126273008a961eaed8ef2223

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