Malicious PDF — malware analysis report

Static analysis result for SHA-256 f947d4579ab1c77e…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 20:06:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 442367762af78dc5414003fe7ec0103a SHA-1: ce219eec737b6476630516bc1f5a4bb5d8b28225 SHA-256: f947d4579ab1c77e2c6abd8d95501927fd6f97d1ed9ad1d0942630344ecd8384
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free Robux' and game hacks. The document body and heuristics indicate a lure designed to trick users into clicking these links, which likely leads to further malicious content or exploits. The presence of embedded URLs and the ML classifier strongly support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.tw/app/431946152/free-robux-come-game-hack In PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/how-to-get-free-clothes-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/roblox-download_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/fly-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://mts.almuhtaduun.com/__statics/gudangsoal/files/free-roblox-items-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
font_00_sfnt_off00003042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3042 21616 bytes
SHA-256: d60f8e7d998f774beabb1380bbe1e37cad6da9a2503a362590fe5ea580b9865c
font_01_sfnt_off00005fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC7 18976 bytes
SHA-256: 20782bd0acfe52469dc9f14a315b4aee1c9563688044d1d6d3a516ef71528a8c

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