Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee103f788a0b7b5…

MALICIOUS

PDF

41.5 KB Created: 2021-05-21 03:41:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6e410adc369c90f76717421a24a5ba16 SHA-1: 53a5dcf6a771b2b88c04dbc860cfdf32d4c4b1ee SHA-256: 2ee103f788a0b7b5b2a6dbfe1f1876f09819af551e94bc7214b1270f1b76ee88
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document uses a 'free game hack' lure to entice users to click on embedded links. The primary link directs to a URL associated with a Roblox gift card hack, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to potentially malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8120

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/roblox-gift-card-for-free-game-hack PDF link annotation
    • http://fmbompastor.com.br/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-survey_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F7 28068 bytes
SHA-256: 0a311f9cafe156942ec6b81efebe4861345b9c395d6e7c6425a530251cc1087b
font_01_sfnt_off000072d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D6 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00007ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFC 18572 bytes
SHA-256: 60e7b0d1b0e81cbc9f742acc768a1a32489c2ca7a8c90f8b1ba1abaa767594e4

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