Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa53274cdbb46e0b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 00:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 23923b25a791dd6fbd36ff0d0a162b4f SHA-1: 18a0034cc5628df35b5e12fc711026709b0d0163 SHA-256: fa53274cdbb46e0b584718d0bc3701741f3330b6a729865b27c5a244e2acfd5e
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/431946152/free-robux-place-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/free-cool-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/redline-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-ot-get-free-clothrs-in-the-catalog-on-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-cheat-engine-table_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/fairy-world-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/killaura-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-g4_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-i-can-get-robux-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-money-cheat-no-survey_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-accounts-with-robux-that-work-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_off00002efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFE 22792 bytes
SHA-256: 738d2934583eaf109ba9811ddc05908cb6b0d8a538b96f3b45716ce06e77833a
font_01_sfnt_off00006215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6215 18944 bytes
SHA-256: b09bc8733bdd60a9e3d807131716c526420abed0d95e213ec937364ccfb38658

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