Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba88b5d66d80346b…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 06:42:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 946137bf66b5c5fd9b5e7f0526269fb4 SHA-1: d7813f5a0105b7dfa62bd12c8cac4e3f784a2b04 SHA-256: ba88b5d66d80346b167c02e2085b3277b978d8bbf1ec7b616883e343632c737f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The ML classifier and specific heuristics confirm the malicious nature of the embedded links. The document body and extracted URLs indicate a lure for users seeking in-game advantages, which is a common social engineering tactic.

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/roblox-jailbreak-hacking-apps-game-hack In PDF document text
    • http://sttlets.education/senayan/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/tiktok-free-photo_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/daily-free-spins-coin-master-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_off00002f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1D 22228 bytes
SHA-256: 0f2ea81c3f6421e65519671fcf529f9b6208f7560219624300ada8aaf022d34d
font_01_sfnt_off000060b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B8 19116 bytes
SHA-256: 9e7d0e21e95baa8bf4fa50e498a8b1d4047597bd2aedea18e5051ebe48ac66b7

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