Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c407533c68202f8…

MALICIOUS

PDF

35.4 KB Created: 2021-07-02 00:32:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 134366aec56f37ba816486e5b8583b82 SHA-1: d47d431fdc5b27162b379fbdd0f0ce0cc376b7e4 SHA-256: 2c407533c68202f8bc68756e4bd66158a3c5dc6e435b7c49d74e4cc53b6e85a6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which leads to a lure for game hacks. The primary malicious link is http://netcdn.co/app/431946152/free-designs-for-streamers-roblox-game-hack. This suggests the document is designed to trick users into visiting potentially harmful sites, likely as part of a phishing or scam campaign.

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/free-designs-for-streamers-roblox-game-hack In PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-member-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-noclip-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-instantly-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-hack-in-entry-point-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-account-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-2021-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hacks-for-prison-life-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-no-human-verification-iphone_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-accounts-2021-november_GM431946152.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_off000032a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A6 22444 bytes
SHA-256: 1259563118638330a2c5f62f566548f04e4d04fdeef648356d9d5bdefcf01d15
font_01_sfnt_off000064d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 19304 bytes
SHA-256: 8b84e372fcdc739e9b8f644e06681e95be9c86462461c4937dd9633a5833ae91

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