Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b683c1a831121b2…

MALICIOUS

PDF

40.9 KB Created: 2021-05-17 06:30:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 45a6ad6657e112575181cc2d104d3082 SHA-1: f31cfc0caa353ef8a99aa5120df6a2dd7af67d1f SHA-256: 7b683c1a831121b2c6403cacdff6dbe4831f3e9f40f432476c071d9e0030d3a9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites promising game hacks and free spins, a common lure for malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to trick users into visiting potentially harmful websites, likely for credential harvesting or malware distribution.

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/406889139/80-free-spins-coin-master-game-hack PDF link annotation
    • http://carmen-duran.com/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://carmen-duran.com/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://carmen-duran.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://carmen-duran.com/images/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45FC 24412 bytes
SHA-256: ba26e982e1e1a191e4591549d3e851f1a581252991f6759b820cd9ee405ba287
font_01_sfnt_off00007d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D75 18268 bytes
SHA-256: c17bdfe55bcf294db1fa8b97ef7603a16e409092d20395243f391f783e354714

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