Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce2d1a42a1f8885…

MALICIOUS

PDF

34.3 KB Created: 2021-07-08 23:40:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9382f0f8e4f44e2cbe8366c9429eba79 SHA-1: 38a3d6bbd2fc9008371532ed2a2f574dd5e82e4c SHA-256: 1ce2d1a42a1f8885b46f2a090bbe3b3fed2d5f7bc53f228cfbcf1e2b83c3144f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' for popular games. The primary malicious URL identified is http://netcdn.tw/app/406889139/hack-para-coin-master-sin-verification-game-hack. This lure is designed to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or redirection attack.

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/406889139/hack-para-coin-master-sin-verification-game-hack In PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-on-xbox-one-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/cheat-dbr-roblox-ccv3_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-make-a-roblox-hack-using-hxd_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-hat-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/external-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-onlineusroblox-hackunl_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/dantdm-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/fbchampion_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-august-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-hack-dowbload_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-how-to-get-free-ranks_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.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_off00003047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3047 22732 bytes
SHA-256: 5f88f0e86d5ff32ab9b23342c29d5aeb9d727ba81e5be71f388a92d6154f20e2
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 18292 bytes
SHA-256: dc21848a9572f0bb2df207bbe20889b0cdba20355121a259901570b765d7c4a5

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