Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a4cc221070f82a…

MALICIOUS

PDF

49.6 KB Created: 2021-06-11 08:51:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94326ca8d13ce038eefc758d0b780280 SHA-1: acbf39dfca9d4edd1e661cc065347f7cc612c44a SHA-256: f2a4cc221070f82a417977b5d38e60c066055b7f533313ce41a7fcad5f424c6f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which are related to game hacks and cheats, suggesting a phishing or scam attempt. The presence of a "download button" heuristic further supports the lure of a malicious download. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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-no-human-c-verification-or-survey-game-hack In PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/good-unifrom-making-software-free-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/www-rubux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5814 30524 bytes
SHA-256: 29a3fa40facd5ffe41de576faf38e4edd55417259daca254cfedf077d22b819a
font_01_sfnt_off00009d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D06 19156 bytes
SHA-256: 5832d82155f3cbedf4f0559a878bbddbb31c7ad45d4e2d940fc5a68a542680b9

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