Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9032be22fe20ed6…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 02:24:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 228fac1da1875ca2604ba2ff4f0b2425 SHA-1: d6a3bfdc085faf878bcdce3d52009a55db3fe663 SHA-256: f9032be22fe20ed6659f8645b66966f10d3f41384dbd3c3db416012c5ce8b2bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free game hacks and items to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The ML classifier strongly indicated maliciousness, supporting the heuristic findings of malicious redirector links and game hack lures.

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.co/app/431946152/how-to-get-halo-for-free-roblox-game-hack In PDF document text
    • http://foo.com.tw/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-passwords-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-visits_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-promo-code-generator-roblox_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-f3x-hacks-gui_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/pubg-uc-qiymetleri_GM1330123889.pdfIn PDF document text
    • http://foo.com.tw/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-no-human-verification-or-survey-2021_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_off00002b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7D 23528 bytes
SHA-256: fd427d00cd9b2c92a9e900de99465320723d0343cd55bb4deee7be3bb79c59cb
font_01_sfnt_off00005f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F78 18920 bytes
SHA-256: 2fbd0169e9d91dc72c0ef9adb95079c16333b40f4b27628dc2c6b131d54b68af

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