Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67c8e54e06460ae…

MALICIOUS

PDF

41.6 KB Created: 2021-05-17 06:42:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bbe781556ff4b0205256a1b036368a2b SHA-1: c79f611e64fc4204dab85605281917fe60cab51d SHA-256: c67c8e54e06460aed2e4b7d336fecbff94fa939d0d7a4afe0410fac6c114faf5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure, specifically targeting Roblox players. The document body and embedded links point to URLs associated with 'free generators' and game cheats, which are common pretexts for malware distribution or phishing. While no scripts were extracted, the PDF structure and embedded URIs strongly suggest a malicious intent to redirect users to potentially harmful content.

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/431946152/hacks-for-roblox-jailbreak-game-hack PDF link annotation
    • http://nod74.ru/images/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://nod74.ru/images/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/robux-only_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://nod74.ru/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.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
font_00_sfnt_off00004888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4888 24068 bytes
SHA-256: 18323454d93e5273981eab4ea83c2b3a0da7c52dbe8b12b9611d502f46201a53
font_01_sfnt_off00007f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4D 18632 bytes
SHA-256: 0c6da94061aa06f3897ec4e3cf893835e909886797588b4f947a24dee870a8ce

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