Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fc15be0e46ed69…

MALICIOUS

PDF

45.9 KB Created: 2021-06-09 06:25:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fdbed067225737e4c14a508b0d5c61b8 SHA-1: 07d634fc88a65748b5cd9f3ab8b851651481976d SHA-256: 47fc15be0e46ed69f9647f0ff76bc375c747ae59fe2f2048c6630a2912d3b8db
82 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it links to a 'free generator / game hack' redirector, specifically mentioning 'free Robux'. The document body, though heavily obfuscated, contains similar text and a URL pointing to a malicious domain. This suggests the document is designed as a lure to trick users into visiting a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/free-robux-no-offer-real-game-hack PDF link annotation
    • http://m-sv.net/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/earngg-free-robux_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/free-robux-working-no-human-verification_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/how-to-make-acount-for-intriga-roblox-hack_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://m-sv.net/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://m-sv.net/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://m-sv.net/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_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_off000050d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D3 27332 bytes
SHA-256: ae7acd31d5545d7495fd137f095c55644da07cffb4fd36c1f34dc5e7c0d19db3
font_01_sfnt_off000090c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C7 18316 bytes
SHA-256: 193b97465deb11e5e9e554da87ff7d9590334c0746fe9e25497e3194a3ce2435

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