Malicious PDF — malware analysis report

Static analysis result for SHA-256 e56f00e79a056bc8…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 08:23:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 062a3af842e8a686713b4cb53a68ffdd SHA-1: c8e2309b0849c6826a7a33a67dd9fb1b148b8a92 SHA-256: e56f00e79a056bc85a1d4bd930ddd6d7c8553f16d5b554edd190741742e9a9ac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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/unpatchable-free-robux-made-by-robuxian-game-hack In PDF document text
    • https://3qblocks.com.tw/image/data/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hack-tower-battle-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-codes-october-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-hack-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-hack-roblox-players-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-live-stream-youtube_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-xbox-gameachievements-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-change-face-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/btools-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-link-2021_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_off00002fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCD 22432 bytes
SHA-256: ee526eea5dbeaa99d9f348e61a2b3b28af1fa0c1e2dfc5c9e741f75c619ee2c1
font_01_sfnt_off00006178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 19908 bytes
SHA-256: 29991321685f8b06111b19b51c18cd0cda100151ee1a78d9a3fc20806538a7ec

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