Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e3e1bb5da7c42d…

MALICIOUS

PDF

44.4 KB Created: 2021-06-08 14:33:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4dd2810bf9ce3871a6df630b3b8d00f0 SHA-1: 5f7a31e99bf45eddf38996f3c1732c738cdc8187 SHA-256: 01e3e1bb5da7c42de528bd20bb3e1782684fff7d544f5b7745b8bb16a46de1cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a malicious redirector, specifically advertising 'free Robux' to lure users. The heuristic firings confirm the presence of malicious redirector infrastructure and a lure for game hacks. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-get-free-robux-proof-game-hack In PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/youtube-danielxd-free-robux_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/penguins-on-roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-in-app-purchases-roblox-pc_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-black-panther-shirt-free_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-not-patched-mac_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-and-fast-on-phone_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-free-online-play-no-download_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-cheat-engine-framed-hack_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-lua-script-hacks-gui_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-walk-through-walls-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/can-you-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-make-a-free-group-on-roblox_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/cheat-engine-roblox-2021_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-do-you-get-free-stuff-in-roblox-2021_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
stream_004_off00005222.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5222 24376 bytes
SHA-256: 8b1f98f587b6242159605fae15919f60d5b8d9d3854fe311428c9d64d62c4ad9
font_01_sfnt_off00008a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5D 18436 bytes
SHA-256: e88eb740ecf24d3aa83951e74979324a2dd4ea66f22e41ea3dee2814380bc38e

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