Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7298d78bf8e6132…

MALICIOUS

PDF

36.5 KB Created: 2021-05-22 01:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c8825eacfb72b15af891abf11842209a SHA-1: d0610ac2f867cd70c281887c91ecf5c193925246 SHA-256: c7298d78bf8e61322f6e6516b359b27cdb2a0a168ef8ba1acd4fb4c5ba23e747
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a prominent call-to-action disguised as a download button, all pointing towards a 'Robux Hack Generator'. The primary URL, 'https://netcdn.xyz/app/431946152/robux-hack-generator-game-hack', is identified as a malicious redirector. The document body, though partially corrupted, reinforces the lure of free game currency, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-hack-generator-game-hack In PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-do-you-get-free-roblox-money_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
stream_002_off00003206.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3206 25400 bytes
SHA-256: 31ac30a650dd5ddd6f8b3cdf66649ccd30ba72b83e33d6ca1f1b8cb54e78b654
font_01_sfnt_off00006cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 18352 bytes
SHA-256: f5433ce3dc9930d213a8e7315569ee207b9df6dd56817c97a1fb358bc14a6a3b

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