Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0784b3c312801c…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 00:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5de6587cd14f141eaee3cafa26a8e54 SHA-1: e42157a4f0615a00134760f8c1af80ba66c5fb9a SHA-256: fc0784b3c312801c0287ae6148a2fa83ddabff61b94c18a2ea57cb2f169fe1fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a malicious download or exploit.

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/431946152/can-i-get-free-robux-game-hack In PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • https://sisomdethospital.com/ckfinder/userfiles/files/free-arsenal-hacks_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_003_off00004c1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C1E 24840 bytes
SHA-256: 76485a09186a0e77fd7eb4c32839bc2555586e3a08974c4885939a4e9fdb151c
font_01_sfnt_off0000859b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859B 18344 bytes
SHA-256: a3821bea5d8002917ca36036ff520c3c0be187df4be91a81bd8356ddd2b369c9

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