Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f25afc9a1b9d966…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 08:25:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 24b6bfc3e88a78756b5be348a4c27ca4 SHA-1: 2a5bd2d0e8376c8dabd5f59a7fa491fd9238664c SHA-256: 4f25afc9a1b9d96639fc5d9dc13ec20f960d510289ef50cdc5214c4b2775c703
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/406889139/free-downloads-for-coin-master-daily-rewards-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/wurst-112_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hack-client-pc-download_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/vido-roblox-ninja-legends-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hack-apk-for-android_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hacking-peobel_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/more-free-roblox-jailbreak-vip-servers-link-desc_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/pubg-20210-uc-price_GM1330123889.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-on-ipad-mini-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-accounts-girl_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/obby-games-on-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-in-roblox-2021-on-computer_GM431946152.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_off000032ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32AC 22864 bytes
SHA-256: c1a08d4210f77767e57024a9de297d452e4f42324ecd5680559c7e2aeedd3c64
font_01_sfnt_off00006608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6608 18760 bytes
SHA-256: efc6e6a20d5b129433faa138c4bd4915eafc17f041f153e07ddde1aae0ffbe5c

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