Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdd3960487e23df…

MALICIOUS

PDF

45.3 KB Created: 2021-06-11 02:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ca62ca27ef598f60a41c325d6248cb54 SHA-1: d61132ecbac5af15fd83c54af72354961b4f368d SHA-256: 8cdd3960487e23df443afb6a45f26384fbdbb212a40412a389c58c93ac6ca131
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks and generators. The primary redirect URL is https://netcdn.tw/app/431946152/change-leader-stats-roblox-hack-game-hack, which is associated with known malicious redirector infrastructure. The document body and embedded URLs suggest a lure to trick users into visiting these sites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/change-leader-stats-roblox-hack-game-hack In PDF document text
    • http://www.jureclomas.com.ar/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/how-to-get-free-robux-on-roblox-without-builders-club_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/pokemon-go-free-7km-egg-list_GM1094591345.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/script-for-robux-free_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/kachifpro_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/roblox-drivetm-hack_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/robux-scam_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/free-gift-card-roblox-codes-2021-list_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
stream_004_off00005292.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5292 25604 bytes
SHA-256: 8afe4f41ae70ed397829bb33844c77f5f32395c9bb2fbf52a5bdd1689bc76433
font_01_sfnt_off00008c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 18916 bytes
SHA-256: 0971784b6995930084e9d2400409a9e3cfe26b3288e8e1210b70dc4cbc8cd560

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