Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0d6cf0214f3178…

MALICIOUS

PDF

33.0 KB Created: 2021-07-22 02:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b61c1ca626e23f5cd9ed97b634e51de8 SHA-1: ab38115ad049ce82f86cb7734692b5464fc8c37a SHA-256: 6f0d6cf0214f317828a284743d9393e9cd2a5d276250fa0010d21981508026b4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action related to game hacks, specifically for Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful content. While no scripts were directly extracted, the nature of the lure and the embedded URLs suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/how-to-hack-roblox-game-hack PDF link annotation
    • https://shiny-nn.ru/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://shiny-nn.ru/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://shiny-nn.ru/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://shiny-nn.ru/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://shiny-nn.ru/images/roblox-hack_GM431946152.pdfIn PDF document text
    • https://shiny-nn.ru/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://shiny-nn.ru/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://shiny-nn.ru/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://shiny-nn.ru/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://shiny-nn.ru/images/is-there-a-way-to-get-free-robux_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_off00002bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAE 22660 bytes
SHA-256: f7ec1661131b7c0e5899cfa2be39924345a1d5f1ef2dacd8fcf483127e94b0d2
font_01_sfnt_off00005dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFA 18532 bytes
SHA-256: e43404e6210dd1b6db886e02177179806245dbc9d668ada1920a62956b1e0403

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