Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf602d3ad47542f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-09 15:51:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8120f08b7c43d4d6342ea9f4264b1efa SHA-1: d1bfa0578bf5b5b081900d24893dba93531051e4 SHA-256: fcf602d3ad47542f764aa877d3152c0da1aa488ccb801df1b1a4690e258fedba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' or 'game hacks' for popular games like Roblox. The primary link, http://netcdn.tw/app/431946152/how-to-get-robux-easy-game-hack, is identified as a malicious redirector. This suggests the document is part of a phishing campaign designed to lead users to potentially harmful content or further malware downloads.

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/how-to-get-robux-easy-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-roblox-dlls-hack_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-more-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-make-t-shirts-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-roblox-6-pack_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-anything-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-free-robux-with-inspect-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/get-free-robux-app_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
font_00_sfnt_off00002fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA5 21704 bytes
SHA-256: 37382886f7ad77d3b01a180a73edb20871a79654ac721d2cb14c4e64e3d8989d
font_01_sfnt_off00005f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 19000 bytes
SHA-256: 9c8ff038a449ab176a5e1d1aada010ae8dcfba4f01e2557d9a848b5c6737e1f5

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