Malicious PDF — malware analysis report

Static analysis result for SHA-256 f400f9c995e9ddef…

MALICIOUS

PDF

34.9 KB Created: 2021-07-07 22:57:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2c25fec12b72d3366cc7d06021acad60 SHA-1: aab73a9327bc6c2b5757ae88144c3f90e09062b5 SHA-256: f400f9c995e9ddef922abc214612ab17462dcd62e64933d766dd3186a6326a32
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/how-do-i-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://cintabaca.org/katalog/repository/hack-asasin-roblox-aimbot_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-jailbreak-how-to-get-free-lamborghini_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-free-roblox-update_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hang-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/cool-avatars-roblox-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-someones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-copy-any-game-on-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-roblox-glitch_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/increible-hack-robux-pastebincom-80b1sjzp_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-on-roblox-meep-city-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-in-silver-in-treelands-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-zone_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_off00003220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3220 22808 bytes
SHA-256: 8dc7e721da3013dd1f0ac20766114dbd4b250392d052b2f77f6790f6c1c578e5
font_01_sfnt_off00006544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6544 18508 bytes
SHA-256: 5fa4adbbb2c865a19aa6c2d7661c2270d24b48d73078d2e2d8c4fb61005cd4a1

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