Malicious PDF — malware analysis report

Static analysis result for SHA-256 148942988df03653…

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 16:52:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4c9cd139144c66ac11bbaa68ab3c8c35 SHA-1: 8060da9e793515f725282685556ef7a526c987c9 SHA-256: 148942988df03653ad740de5726ac823f166d49273e8b0dcd4edaede502aebed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to "free account Roblox with Robux" and directs users to a URL associated with game hacks. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate it's a redirector for game hacks. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest it's designed to lead users to potentially malicious content or downloads.

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/431946152/free-account-roblox-with-robux-game-hack PDF link annotation
    • http://dqdq.pl/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://dqdq.pl/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://dqdq.pl/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dqdq.pl/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dqdq.pl/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://dqdq.pl/images/robux-websites-that-work_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
stream_003_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 25160 bytes
SHA-256: 395c61f2679b85f0464a563660d9c73a4086e30dce2b07b33f309ff602befb1e
font_01_sfnt_off00008383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8383 18676 bytes
SHA-256: 668999cf9284642de193c24d0ad86807d097fd3a0f3919542938043f8a05e142

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