Malicious PDF — malware analysis report

Static analysis result for SHA-256 19a0f135061137de…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 14:02:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7e249f64ef7bd418fb71accc181a0f5a SHA-1: 6c4decc515d98c7482874ad06ca03039bac72eac SHA-256: 19a0f135061137ded3a9d1f409643fa0932f2798fef060bbed2fd872a107086b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/minecraft-free-version-game-hack. This redirector is used to lure users into downloading potentially malicious files by disguising them as game hacks or generators. The presence of a download button lure further supports this malicious workflow.

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.tw/app/479516143/minecraft-free-version-game-hack In PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-prison-life-hack-download-2021-mobile_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-rocitizens-cheats-2021_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/robux-online_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-cheat-engine-hacks-download_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/make-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/hack-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-robux-hack-no-games_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-ho-to-hack_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-level-7-executor-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-hack-god-mode-phantom-forces_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-do-you-get-free-robux-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_off0000319a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319A 22636 bytes
SHA-256: 8d2ab175c6e65e254b25136463ee97a092dfca6848a0e9f731a90307806a1a88
font_01_sfnt_off00006406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6406 18132 bytes
SHA-256: 6be78a61ab105c7d9991d7ed817040fa59b6933bf873ac938a74172a192409de

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