Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7ab4abb740e7c6…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 03:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 38fcc2b67858bd2472a1bf837cb1fbf0 SHA-1: 30d75a15c2154df9a44d56b52750702e096e0cc7 SHA-256: ba7ab4abb740e7c605efe423972a1b4a1a4b9b23225ad9b4ef7108a3bc3c81bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free generator / game hack' lures. These links likely lead to further malicious content or phishing pages. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/free-daily-spins-from-coin-master-game-hack In PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/easy-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-make-a-free-robux-game-on-roblox-alvinblox_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-free-robux-on-roblox-zephplayz_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-hack-roblox-with-cheat-engine-for-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hes-hacking-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-card-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-no-verification-no-download-no-survey_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-account-roblox-passebin_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-free-robux-no-human-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hack-sin-verificacion-humana_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-flower-crown-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-link-spin_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_off00003253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3253 23104 bytes
SHA-256: 62103087ce8667bfb7e18c5cc24504692001b56646f298bad33b2aa29f835306
font_01_sfnt_off000065f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F2 18856 bytes
SHA-256: d310d8b42a9db28f952d6c808dbfd2c0798e16e205ce104a4cdcfe428c53c924

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