Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffbbb905a6c4319f…

MALICIOUS

PDF

52.7 KB Created: 2021-06-11 00:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9ecdd0b26a1985c3bf2c41bd9b1355a SHA-1: 2e1e03566d70ef6301d7592c093ffa9d8abe1aa0 SHA-256: ffbbb905a6c4319f48c6bbe3228626623b60c6821fa8bc1c895c1180f5d707f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and free item generators. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or downloads, serving as a lure for users seeking cheats or free in-game items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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 https://netcdn.tw/app/431946152/cheats-for-royale-high-school-on-roblox-game-hack In PDF document text
    • http://demenagementlandry.com/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/hackaron-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-meep-city-cheat-codes_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-tiktok-followers-no-human-verification-2021_GM835599320.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-juwelen-hack-mad-paintball-2_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/2021-roblox-hack_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-robux-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000543d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x543D 25472 bytes
SHA-256: 3f9fe982fed837f5671de31c04cc7827e8a9dfd50ff7b22317c406247851e14a
font_01_sfnt_off00008f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1F 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off000098bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BB 6700 bytes
SHA-256: ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27
font_03_sfnt_off0000a8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F8 19032 bytes
SHA-256: 7e1bdb76f2ac852163e777504f9be9cfc33f10fd27910b600de20bd11442e22f

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