Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5d311d890ea9b4…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 06:59:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 369740ccb1a1f2e5583ed5f4e37d79d0 SHA-1: 9b7834b7c2b00732fba60ea976e17b7b6b30447c SHA-256: 2d5d311d890ea9b4415b65bd1ecf5795ebb3bc2f65852c85f22748362a240e36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The primary redirector URL is http://netcdn.co/app/431946152/roblox-gear-hack-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a lure to download potentially unwanted or malicious software disguised as cheats or hacks.

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-gear-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/ww-robux-hack-top_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-roblox-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-admin-hack-adopt-and-raise-a-cute-kid_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-download-free-chrome_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-purple-hair-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-lumber-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off0000315a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315A 22896 bytes
SHA-256: 727bf9b9dd6fc2c1df97dd07076931f5f849ecb4ccdc2aa8a91f461eebf8b702
font_01_sfnt_off000064cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CB 18656 bytes
SHA-256: 1ec1232fafb382e3acf85c9072c84d9389bf347e79b766b484e8cf1a25bd14f5

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