Malicious PDF — malware analysis report

Static analysis result for SHA-256 b78fa309b01d0c49…

MALICIOUS

PDF

33.0 KB Created: 2021-06-19 05:20:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c5231dd9be46169060fe667875c36d97 SHA-1: fd6fdbb6bcb5d1394ce8d8c7cd820310fd21cbde SHA-256: b78fa309b01d0c49c2a226d04c0adb48203f946367a81d9de052cfe5ede6fb72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, including one that appears to be the primary lure for downloading content related to game cheats. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of numerous related URLs suggests a campaign distributing similar lures.

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/how-to-get-btools-on-roblox-with-no-hacks-game-hack In PDF document text
    • https://ibelive.tw/image/data/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-rs-cheat-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.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_off00002d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D35 20952 bytes
SHA-256: 32ef31a8bbeff1525946467505e6136b177149fb5a0103d0b3d84f036d21335b
font_01_sfnt_off00005a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A96 19408 bytes
SHA-256: 32193836b17dcca14d89217301cef84f4b199d578d4c00ea0df4a127cfdbfad4

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