Malicious PDF — malware analysis report

Static analysis result for SHA-256 f785129b9be42d5d…

MALICIOUS

PDF

44.6 KB Created: 2021-06-10 19:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32bdded06b5eb1cbf148d98cea291d63 SHA-1: e24242edfe3dcca3843d50a90a058b05d7a90299 SHA-256: f785129b9be42d5d33eb2442c0d8e67f396ea699d8f4051a8115a8a2fa34dd06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game items and hacks to entice users to click on embedded links. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded URLs suggest a focus on popular games like Roblox and Minecraft, aiming to exploit user interest in obtaining in-game advantages. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-robux-hack-on-pc-2021-game-hack In PDF document text
    • http://cosmosdawn.net/images/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/is-the-game-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/auto-clicker-download-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/roblox-free-admin-how-spawn-monster_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-free-roblox-skins_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/get-robux-today_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/free-robux-legit_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_off00005131.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5131 24468 bytes
SHA-256: 522c246d0f1087881efb2030b8a5d7be97f77ad42097ad0810b101cb05d4c697
font_01_sfnt_off000089b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B4 18968 bytes
SHA-256: 791d1cace70f63f3e22a32266ebf2518c614b09e6bc9774ad3f10c96d23acac5

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