Malicious PDF — malware analysis report

Static analysis result for SHA-256 7502d74ba8bc5e9a…

MALICIOUS

PDF

33.0 KB Created: 2021-06-30 07:48:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c5874b8e89a032e5356dda3559b0f3a5 SHA-1: 80953d21e18b5dfb463bc3b592e09d75089ae69d SHA-256: 7502d74ba8bc5e9a92d824adb24df474203f6635de7bbef42b40996a503abf9d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-change-username-on-roblox-free-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-zephplayz_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/glitches-for-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-roblox-account-script_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-pls-i-need-some_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/a-tab-that-can-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-without-verification-code_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-roblox-coins-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/games-for-free-to-play-foenite-like-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-without-hacking-or-human-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-make-bc-no-hack-roblox_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_off00002b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1F 22032 bytes
SHA-256: d33476f62bda908993fab6092b248dea110f11aac49fdc8ff714311a1f97006f
font_01_sfnt_off00005bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFF 19240 bytes
SHA-256: 4e6453367fcb015d323503ceeac6cd44a0a46ce42169b752842ef89723b8592f

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