Malicious PDF — malware analysis report

Static analysis result for SHA-256 a265d04cd87446ec…

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 06:25:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f80a274b0688f548ef682ffea74bdc54 SHA-1: a70316f2d7acdf9b5c8c7e33f972e8a319273779 SHA-256: a265d04cd87446ecd67bb2d6d4fbb3d8587cd959be377c30ffe82667bfa900c4
160 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, including one identified as a malicious redirector. The document body explicitly mentions "Roblox Robux Hack V1 34 Download" and provides a URL that aligns with this lure. The presence of multiple links to potentially malicious domains suggests an attempt to redirect the user to a site that likely hosts malware or engages in phishing. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-robux-hack-v1-34-download-game-hack In PDF document text
    • http://fishboat.hr/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/hacks-for-legends-of-speed-roblox-download_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/free-spins_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/welcome-to-bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/tiktok-free-view-jelly-fruit_GM835599320.pdfIn PDF document text
    • https://www.fishboat.hr/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-spin-link-for-coin-master-game_GM406889139.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_off00002fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 22748 bytes
SHA-256: 6b5b40a64b4f1484b6b4a4b2a877a17ebe7087883d784ede3291699af5022d76
font_01_sfnt_off0000628e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 19780 bytes
SHA-256: 4599abadaff0a555cfa00f1f00fc23327e2c5eca8905e93a95df0e16a2664bc1

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