Malicious PDF — malware analysis report

Static analysis result for SHA-256 a05d5952e59321df…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 21:52:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a63fbb674035c72efd8ebff7134201d SHA-1: e05c4e30c9b2cb8a0ecbb4900b4992e238e08262 SHA-256: a05d5952e59321dfdef4cfea493a85f08526105a51cd512723f33776f38ace61
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirectors and other PDF files, all related to game hacks and free in-game currency. The primary redirector URL is http://netcdn.co/app/431946152/bypass-chat-hack-roblox-game-hack, which is flagged as malicious. The document body also contains this URL and references to game hacks, indicating a lure to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or scam attempt.

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/bypass-chat-hack-roblox-game-hack In PDF document text
    • https://luyenthitoanpro.com/public/upload/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/code-hub-free-robux_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/new-hack-for-roblox-deathrun-2021_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/money-cheat-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/roblox-hack-2021-free-robux-pc_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-ban-banhammer-roblox_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC8 22208 bytes
SHA-256: 0fc93232a6cff00c4ccbb6e2fe13ea4ee024d4a8fc3297627470b10a30d76108
font_01_sfnt_off00006115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6115 19284 bytes
SHA-256: e07af892f097a2312b6a6937f2983892b09896b034a962ea320f0b1cff4a28d0

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