Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fcba29612b3465e…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 00:35:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e140c537d778b3372931e44940ddbc3 SHA-1: 40acc3016a3c0406241e52f407ea63394df0656b SHA-256: 7fcba29612b3465e07f00a0741d5e482cb3e856e05427ec6e87976f6f213c637
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on promises of free game currency or hacks. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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/www-free-robux-win-game-hack In PDF document text
    • http://www.ocic.hr/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/great-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/hack-de-robux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://www.ocic.hr/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/free-script-runner-roblox_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/robux-generator-no-verification-needed_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_off00002c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C94 22408 bytes
SHA-256: 9dcfb89062809f8e7496f088e33dcf5e89766b0ac9fc5ac1d9d347b769855e82
font_01_sfnt_off00005e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5B 19196 bytes
SHA-256: 04bdda834073c1b123b3e4c9a68b9659172a625f17864803af922dd5717fe51f

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