Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcb1a5d7f1b4791d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 04:42:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 55bb0895e7083330134fa091379cc0bf SHA-1: a0ad1352b7ba3bf6d33d82cef291b44d55ee57c2 SHA-256: fcb1a5d7f1b4791dfee22b4e94bd74eea67fc0383056b44258957974d1c27c37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, that promise free game hacks and currency. The primary lure is for 'Roblox Robux Hack'. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful sites. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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-robux-hack-android-oyun-club-game-hack In PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/leah-ashe-roblox-royale-high-hacks_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-cheat-engine-detection_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/cheats-for-roblox-kohls-admin-house_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-gift-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://www.alamac-kitbag.co.uk/uploads/files/files/daily-free-spins-coin-master-app_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_off000030a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A9 22212 bytes
SHA-256: 67616ecb7fe6a730d28ccbc86a869a16717b3e0ba9afc7da11946810a09655fc
font_01_sfnt_off000061cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 19272 bytes
SHA-256: be43139e75f8964f48c07d78fa7ae437f08c0058898b4283ba0ca4a743559ec5