Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bc949bb84803b34…

MALICIOUS

PDF

41.5 KB Created: 2021-05-13 14:36:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c45361b04726a286b4f965657d09c15e SHA-1: 5ad2c27a10673eed3e2dc8554a0aa2d837435440 SHA-256: 6bc949bb84803b34d05f2f14c1a29466c82473406fbda8f7c3129ef2602a67e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The primary lure URL, https://netcdn.xyz/app/431946152/free-premium-roblox-game-hack, is directly associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-premium-roblox-game-hack In PDF document text
    • http://thomas-hartl.at/images/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-robux-codes-2021_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
font_00_sfnt_off00004471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4471 25612 bytes
SHA-256: 7695aece878cec374a139cb7375abd98078b002bd4c69fe6e3b1c6c21fc0441c
font_01_sfnt_off00007f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F34 18620 bytes
SHA-256: db698e20de7c3d454232d28484b91ac7eeacd2d96f4c59a267e05c3027dbd208

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