Malicious PDF — malware analysis report

Static analysis result for SHA-256 7532fcd09860ffbe…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 13:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fc3c3e4a7b67a522583731b092128315 SHA-1: 73fd734ee3487f7939508cb69b032f8213f5ee04 SHA-256: 7532fcd09860ffbe1062ed51dbcea6c071476647bc817d3978c0a9d19d1dc57c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to free game items and hacks, directing users to the URL http://netcdn.tw/app/431946152/free-roblox-shirts-templates-game-hack. This URL is likely part of a phishing or malware distribution scheme. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-roblox-shirts-templates-game-hack PDF link annotation
    • https://www.hearcolors.com.mx/img/blog/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/roblox-hack-site-2021_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-promo-codes-april-2021_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/roblox-i-got-hacked-again_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/get-free-robux-from-roblox_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-roblox-exploit-website_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/roblox-copy-others-chat-hack_GM431946152.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_off00002dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFD 21924 bytes
SHA-256: 8e86c8cde99ec9b2fa684555f1b6172a0e179ec3913d1a45d95062595a60839f
font_01_sfnt_off00005e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E86 19476 bytes
SHA-256: e022dfdfaf5969877872bfc7bdb5743867beaa2f529a87f7ccf368eea5ea03d6