Malicious PDF — malware analysis report

Static analysis result for SHA-256 a392ce0a9b4849ee…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 01:50:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 80446c66e4fceeaa9223dfea194ad27c SHA-1: 6fec38d6a0c1eff2bc12268d045e0a728ad7a5b6 SHA-256: a392ce0a9b4849eee359f81b2b4f9157d04c97645edbc18f12500f0af97724c8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text promoting 'free Robux' and game hacks, which is a common lure for phishing or scam websites. The primary link, http://netcdn.tw/app/431946152/free-robux-2021-no-verification-game-hack, directly leads to a page offering a 'free generator / game hack'. This indicates a social engineering tactic to trick users into visiting potentially malicious sites. No scripts were extracted, but the document's structure and content strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-2021-no-verification-game-hack PDF link annotation
    • http://www.sixtenlogistics.com/uploads/files/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/hack-roblox-admin-dll_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/easy-cheat-for-ultimate-driving-newark-roblox_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/roblox-2021-hack-face_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/script-for-robux-free_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/gamingwithkev-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/cheats-codes-roblox-treasure-hunt-simulator_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/coin-master-daily-free-spins_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
font_00_sfnt_off00002c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5A 22244 bytes
SHA-256: 8a0548bd098a9ebc94617e234164ede2523b237e41eca6b1e398716183994b66
font_01_sfnt_off00005de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE9 19476 bytes
SHA-256: 55ad41a6ce49086aa15382541082a2b64ef707ba2ed30a01096caf72f6ded3f0