Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5af9fc3e76f06e…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 05:46:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 73efc87ad4ff36a87f2e16cb2af0cbbc SHA-1: 6e58a3abdfa2ba0c5d9ce66638a29b782af6fb81 SHA-256: ce5af9fc3e76f06e98c28a59449a34b84d795ee7da7ade1d13cb57440014824f
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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-snacks-link-game-hack PDF link annotation
    • http://gaeconsultores.cl/images/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-spins-on-coin-master-game_GM406889139.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
stream_003_off00004765.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4765 25416 bytes
SHA-256: 3a148d469ae915bc28537a2f5c88341ff3df52abb8c213f3b8a5363eaa954309
font_01_sfnt_off0000816a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816A 17880 bytes
SHA-256: 09034ee7a1f9989932e9db65c2957a4d9f61d6fccc52a1ac5f57be2128ce07e5

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