Malicious PDF — malware analysis report

Static analysis result for SHA-256 305267be39dcb2f0…

MALICIOUS

PDF

43.1 KB Created: 2021-05-11 23:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e09ad2403e0d72a455dc8bb87ef8ec39 SHA-1: 404c511366e3471cc650e42eec7a88176346001b SHA-256: 305267be39dcb2f0b1e19ce364258ef8082500208893c1b33c1e925171e944fd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a 'game hack' and links to a URL that appears to host a malicious download. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of external URIs and the nature of the lure suggest an attempt to trick the user into downloading and executing a secondary payload, likely exploiting a client vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/minecraft-java-edition-free-download-for-android-game-hack PDF link annotation
    • http://promotion.si/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://promotion.si/images/robux-link_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://promotion.si/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://promotion.si/images/cmaster-club-coin-master-hack_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
font_00_sfnt_off00004bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC2 25676 bytes
SHA-256: 42b18b10e6703a703c3726457eaeecd01036b4184d55e22f81f582c38b8a8880
font_01_sfnt_off0000857b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 18572 bytes
SHA-256: 9a204aae2d2f70fc5507d3f087af5af504ec912d2153fb6fe77e4483c9eaf90f

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