Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63436efb869ff9b…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 10:58:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 134d6717a8d4860f5f8509303f424fe4 SHA-1: 295ad560b211c34293bdacc5204fafdcf8683396 SHA-256: d63436efb869ff9b9a23c03ce238de44273d72d4931685ed5b47a9e46bf14b19
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 0.9980

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.tw/app/479516143/best-free-minecraft-server-hosting-reddit-game-hack PDF link annotation
    • https://sparkthis.org/ckfinder/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-roblox-codes-may-2021_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-free-gui_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/access-here-https-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-roblox-accounts-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-build-a-boat-for-treasure-hack_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-roblox-templates-twitter_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/how-to-noclip-in-roblox-jailbreak-without-cheat-engine_GM431946152.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000303d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303D 22776 bytes
SHA-256: a598894b8010670917dd295656f86f30c48419a1dae5e437ee41ccc16575bb9b
font_01_sfnt_off000062c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 18504 bytes
SHA-256: d871dcb748a79589dfb9206c8c26b1b31a59c6b5fd6e64801d8efc9cfdffb698

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