Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f7ce95c58278aa…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 09:50:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 73e85ea7f16847c27679e0825351632f SHA-1: 79bf6f36bc59664e8c0ad80a79c33a8140bece92 SHA-256: 54f7ce95c58278aac1fc8066cbe11bee7a7c3edf83876e8fe9195e17e99ca902
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free Robux". The primary link, https://netcdn.xyz/app/406889139/coin-master-hack-apk-download-2021-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a social engineering lure designed to lead users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-hack-apk-download-2021-game-hack In PDF document text
    • https://www.utalii.ac.ke/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/minecraft-story-mode-free-download_GM479516143.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_003_off00004ad6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD6 25852 bytes
SHA-256: eb9906dd2dfacf4897fbbcdf974dd989307a128482ce5fd06afb5572fe8e0a64
font_01_sfnt_off000085ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CA 18876 bytes
SHA-256: d185c6cd3e49a2afee7ee12c234f8f1d1893ea96722679c453b335d0786e87d0

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