Malicious PDF — malware analysis report

Static analysis result for SHA-256 922ee9cb87b5f480…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 00:41:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7fa82d8d5cdb90a02abffefd8b490645 SHA-1: e49286222dbe179655b220bf79eb3c78effe269e SHA-256: 922ee9cb87b5f4806c1b00ad19b7eeafa9d5b99cf13f9f52333d3b3fbd0558df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs reinforce this by referencing topics like 'how to become a real hacker in Roblox' and 'free Robux', all pointing towards a phishing or scam attempt. The primary IOC is the malicious redirector URL, which likely serves as a gateway to further malicious content or exploits.

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/431946152/how-to-become-a-real-hacker-in-roblox-game-hack In PDF document text
    • https://www.ocic.hr/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/roblox-free-candy-decal_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/roblox-buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/comment-avoir-des-robux-gratuit-sur-roblox-2021-sans-hack_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/free-admin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/cheat-commands-in-giant-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/assassin-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-robux-for-free-on-pc-gift-card_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/red-boy-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-hack-pc-download_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_off00002ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC1 21856 bytes
SHA-256: 670c17c97285284207579bed77ab3c847afc70ce01e34faa261ddf7a369f2b7b
font_01_sfnt_off00005ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE1 19080 bytes
SHA-256: 9b279c0ffb790f687f781f252a77f28dd539bfdd98b0808015dfab59a519187a

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