Malicious PDF — malware analysis report

Static analysis result for SHA-256 5549ba67c3ef9de4…

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 21:09:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fd819a24fb68efa366601420453604df SHA-1: cedfe2feeb4f4a8a5c1cee94ff6d253026d90336 SHA-256: 5549ba67c3ef9de43a2937f26658c1e7e307562af679e49e04732d8e63568903
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links and text promoting 'free Robux hack code 2021', acting as a lure for users to click on malicious URLs. The primary URL, http://netcdn.co/app/431946152/free-robux-hack-code-2021-game-hack, is presented as a generator or hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to further malicious content, aligning with a spearphishing attachment tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/free-robux-hack-code-2021-game-hack PDF link annotation
    • http://battistibrothers.com/system/userfiles/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/descargar-roblox-hackeado-con-robux-infinitos-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-for-samsung_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-commends-on-roblox-innovation_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/wwrobux-giver-free-com_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-birthday-cards_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/batu-kolukfaki-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/robux-for-free-no-survey-2021_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_off00003037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3037 21884 bytes
SHA-256: cfccdc74013fca6d3a64e6eb84f9cefbf6c79692ba3b430050b8e9dfe053bdc6
font_01_sfnt_off0000606e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606E 19460 bytes
SHA-256: 3199a1ccc2125efccbb74d69f9e7117b275f13189ed240b0462a4b6150a82f31

Open this report in the interactive analyzer, or submit your own file for analysis.