Malicious PDF — malware analysis report

Static analysis result for SHA-256 84708c35b04d6cc4…

MALICIOUS

PDF

34.8 KB Created: 2021-07-19 14:34:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0db91aa980579c441ef5eda5fc855c3a SHA-1: c0143491472de4592426081e995a5d788c8d2702 SHA-256: 84708c35b04d6cc4e29d70f739d323e988c2ea57a6000b1de5aedca4a6fb6a6c
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 0.9962

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/minecraft-free-download-unblocked-game-hack PDF link annotation
    • http://www.likto.eu/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://www.likto.eu/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://www.likto.eu/images/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://www.likto.eu/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.likto.eu/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.likto.eu/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.likto.eu/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.likto.eu/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.likto.eu/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.likto.eu/images/minecraft-for-free-on-phone_GM479516143.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_off00003139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3139 23036 bytes
SHA-256: 9ec057fed081d9baba8020bd0be06a33b722e84186e1f7699f612d254190d344
font_01_sfnt_off000064ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 18804 bytes
SHA-256: 351b73efa1cf4358b07b283040b01ec481d6b0b50516ad4f4e94e13994b713ed

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