Malicious PDF — malware analysis report

Static analysis result for SHA-256 15dda178fe969e4d…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 21:03:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: efae230150ffcfa1e34b75cd02ae0aff SHA-1: 8adb3bf247aa43f815a654e88df271f2d888c2a2 SHA-256: 15dda178fe969e4df8960d0a655d85714271c54e74ae50e6ca18117d22284b25
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure URL is http://netcdn.tw/app/431946152/do-robux-generators-work-game-hack. This indicates a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery.

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/431946152/do-robux-generators-work-game-hack In PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/hack-pac-man-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/2021-bt-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/master-coin-free_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/google-free-games-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/hack-conteur-blox-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-make-a-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/when-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB9 22360 bytes
SHA-256: ba58879bf8541a5461a0fb1b5bbd795041e8e890464a342a0ec014a886b11cf8
font_01_sfnt_off00006053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6053 19192 bytes
SHA-256: 3f47549173c4c073ff6b774dc640a5bd882cb9edb94891ada683af003a6a3260

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