Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bca7f064e4312f6…

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 03:51:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b785f0cd4389d23b5a02a106885c5f88 SHA-1: 7a050d4984fbc607eb4e1f64f89434a6f2157127 SHA-256: 5bca7f064e4312f6ffe053b146ab0e64d84e94d02e0bf5fe57187a0f68b6a75c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a website offering game cheats, which is a common lure for malicious content. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack aimed at users seeking game-related exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/cheats-for-super-power-training-simulator-roblox-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-download_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_004_off00005281.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5281 25036 bytes
SHA-256: acafe0a8ecefa0f89e167dace9d3d831b2a31706b6c7820dfd4398e74f57d3f4
font_01_sfnt_off00008c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C11 19748 bytes
SHA-256: e5afc89ab9223c33df2efa8db030e4adcb9ee6bee25b898c595b2bacbf0a87a9

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