Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b849a30886060d…

MALICIOUS

PDF

46.7 KB Created: 2021-06-08 11:55:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4c84c1c7a74fcafcf5e1aed6d89909e3 SHA-1: e195518f9023b77a296a48a59fd431cf9b8c60c0 SHA-256: d6b849a30886060d72ed15346aacf3efb544dee8bf76be2349e1b5003ba53967
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL associated with Roblox hacks. The document body, though partially garbled, contains text related to 'Roblox Hack Siteleri' and the same URL. This suggests a social engineering lure to entice users to click the link, likely to download malware or visit a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/roblox-hack-siteleri-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-page-no-human-verifaction-no-surves-no-email_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000524a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524A 28404 bytes
SHA-256: add57000dd5c72802cb34f0d1b600b368454bccfe6a2be4de5b8e91aa467abb9
font_01_sfnt_off000093ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93AC 18408 bytes
SHA-256: b36f36da96a0121f9cb707965eed8c2cf6b3351a6258296b5d8857a42e3b6d26

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