Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1fc46aae1f6c60…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 16:37:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f451a9f2bf54de3e0fe9dfc5e389b299 SHA-1: ed7205fafb2c9a3440a5c40faaa99d7cd4fa4d23 SHA-256: fc1fc46aae1f6c60131849dadf8c3bfe7f11cb46b2de88950c9109560318c1c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a critical link to a known malicious redirector at http://netcdn.tw/app/479516143/minecraft-mods-download-free-game-hack. The document body and heuristics suggest a lure related to game hacks or generators, aiming to trick users into downloading potentially malicious content. No scripts were extracted, but the embedded URLs and the nature of the lure indicate a phishing or malware distribution attempt.

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/479516143/minecraft-mods-download-free-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/cheats-for-roblox-jailbreack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-cosed_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-robux-fast-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/conqueror-3-roblox-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-a-free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hacker-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/appstore-free-roblox-for-computer-game_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-build-a-boat-for-treasure-hack-script_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-free-roebucks-on-roblox_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_off00002fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 22080 bytes
SHA-256: c9181707fc74ffc0e41ead5c98577f1480411b4bf1f1b835d26d60ad6a8ac641
font_01_sfnt_off00006053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6053 18576 bytes
SHA-256: 7d81b8f4357a3ba39d5ed2eaef427c1fb3ec5456621d56fd5ab99f16751bc649

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