Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c3d2b2964005f6…

MALICIOUS

PDF

47.2 KB Created: 2021-06-11 07:24:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f0859e0d36495bc32d5cb041a510b31 SHA-1: a45428b4678103d0ffa8be12cae1dd2537370e79 SHA-256: c1c3d2b2964005f666b923d6b2e446c3a49e418f34845b308aa5894345bb690d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically targeting users interested in game hacks and generators. The document body and heuristics indicate a lure designed to drive users to a malicious URL, likely for further exploitation or malware delivery. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/which-games-on-roblox-you-should-fly-hack-in-game-hack In PDF document text
    • http://amcoeur.org/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/tiktok-free-movies_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/exploit-20211-roblox-cheat-honeypot-users_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/idle-zoo-tycoon-hack-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-website-games_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/miss-play-com-free-robux_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-no-survey-xbox-one_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-champion-tshirt-free_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FD8 24432 bytes
SHA-256: 46039c810951a94a4adce5134f56ebc65fc8f9f1fc29bc7a44a1a65a112b2e9d
font_01_sfnt_off00008801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8801 2844 bytes
SHA-256: a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1
font_02_sfnt_off000091a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A8 19744 bytes
SHA-256: 6f5125fb7dee77acc2371cd88ade62b5821f324d94a111dfdbc622ca06e49087

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