Malicious PDF — malware analysis report

Static analysis result for SHA-256 461354b21be98a5e…

MALICIOUS

PDF

33.9 KB Created: 2021-06-18 08:26:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 44a8239dc70e976879b5b2594377d01d SHA-1: 3a25040033260549b27690cb088ec390f77f4167 SHA-256: 461354b21be98a5ea51614bbb99cfca0def99ca11a483de9130e65864e3177b9
82 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, with a primary focus on game hacks and cheats for popular games like Roblox and Coin Master. The heuristic firings indicate that the document uses a lure to encourage users to click on these links, likely to download a malicious payload or redirect to a phishing site. No scripts were extracted from this sample, limiting the analysis of its execution behavior.

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.co/app/431946152/cheat-buddy-roblox-esp-game-hack PDF link annotation
    • http://sbm-nn.ru/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-cheat-robux-deutsch_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/rbx-claim_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/getrobux-info_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/pubg-uc-generator_GM1330123889.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-without-downloading-any-apps_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_off00002e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8D 21808 bytes
SHA-256: 724733c746c7c4567672c1a2bf13c16e7ead01e314199ceb33b80387656e51f6
font_01_sfnt_off00005eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB2 19240 bytes
SHA-256: 7c1508178ae08b1c7ef8a2b3a1e9cf9de5f0ee972eff2ed46e2900e4e87172c0

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