Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba2ec324d37e6b0a…

MALICIOUS

PDF

31.2 KB Created: 2021-06-26 10:33:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 86bc2ffab16631fd8c6b9f81106a5299 SHA-1: 1c7eb8a723fd49fc302bfd2a557a238571443290 SHA-256: ba2ec324d37e6b0a6e9cfc060e2060f6e5d7ec140d78f2eb9d213e9cc2106a4e
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Roblox' and 'game hacks', directing users to a suspicious URL. This indicates a phishing or social engineering attempt to redirect users to a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 3

  • 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.
  • 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.co/app/431946152/roblox-how-to-get-for-free-game-hack PDF link annotation
    • https://www.tiancom.com.tw/upload/files/free-cool-stuff-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-play-roblox-liberty-county-for-free_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/guuudinfo-robux-hacks_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-hack-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-dashing-simulator-hacks_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-best_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-secret-forum-hack-v11_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-hack-roblox-for-robux_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_off00002dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCC 22028 bytes
SHA-256: 0db983d1c730559f8e5337d562cd56ca94b20eee04e7a0e19177e9d1d0104de4
font_01_sfnt_off00005e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7E 18920 bytes
SHA-256: 9c586bd25b857c4385d83f51b389575477d189de27e6dfe08f6e7e5cfe4b0f7a