Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6a586e72a19f11…

MALICIOUS

PDF

46.4 KB Created: 2021-06-07 12:29:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e4e2d017ee3ae28447a0973dd1145047 SHA-1: 3cfa51c3e006d27e24d50847d9679a5b8595c432 SHA-256: 8d6a586e72a19f118e24b73f6ef0cc2233ed55f4e59916774f58e8e35fac0e06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary lure URL, https://netcdn.tw/app/431946152/roblox-medieval-warfare-reforged-hack-script-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites, likely as a precursor to further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-medieval-warfare-reforged-hack-script-game-hack In PDF document text
    • http://thomas-hartl.at/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox-hack-apk-2401_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-tiktok-accounts-with-2021-fans_GM835599320.pdfIn PDF document text
    • http://thomas-hartl.at/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/pokemon-go-free-remote-raid-pass-2021_GM1094591345.pdfIn PDF document text
    • http://thomas-hartl.at/images/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-minecraft-bedrock_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_004_off00005132.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5132 27048 bytes
SHA-256: 2c6125375c9af9a2752d9eaba075312ef78a2458e64412fcd609f5eba76860df
font_01_sfnt_off00008f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0F 19552 bytes
SHA-256: ebcf8ea7e85f33e14efb74ed6a72a5ec3e79e788c61343131cf16b2810c6e11d

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