Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f32ad181e258bb…

MALICIOUS

PDF

46.8 KB Created: 2021-05-17 16:06:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ae47a40a0c8e86f8e7122d8686a246c SHA-1: c8ce1161e546bb61b8dbfa493c0ed4d70f53a535 SHA-256: 98f32ad181e258bbe8471b1e3976e3326c711d96be9410c0b8f8f825ae22e11c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on a 'free generator / game hack' which redirects to malicious infrastructure. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/how-to-get-1-million-robux-for-free-2021-game-hack In PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/blox-rewards_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/code-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B59 26064 bytes
SHA-256: bf6c626478010d7064c694b3765546a0209583ccb57b78f450c361cb181c55e3
font_01_sfnt_off00008828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8828 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 19072 bytes
SHA-256: 6899649986c08cd88da4e8ab8a55ee52e34bf21c69bba097983649bb28a6798f

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