Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c453833bdfe3ae…

MALICIOUS

PDF

43.1 KB Created: 2021-05-19 19:10:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b6aef46c74c49ab02d0ada65036db24 SHA-1: 57f1567d86822e65fa3155d1b1cc7537df87f6eb SHA-256: 69c453833bdfe3aea54f9754ce0d6169b3e41224cbb7a1c96b09ebdd261acaf8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.xyz/app/1330123889/pubg-uc-660-game-hack, which is associated with a lure for in-game currency. The document body, though heavily obfuscated, also contains this URL and other links pointing to similar scam-like content. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

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/1330123889/pubg-uc-660-game-hack In PDF document text
    • http://neltalen.nl/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/roblox-a_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://neltalen.nl/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/www-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-hack-people-in-roblox_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_off000043c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43C4 31096 bytes
SHA-256: fbb4cd776741210ba050f95fb4fbed8994c757972d076a78d2428ba7eda8efc7
font_01_sfnt_off00008648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8648 18240 bytes
SHA-256: ca000feec33bf2601b42924c254a26d11e61856c950d510f773b2d60a253dbcc

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