Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01fff0c469b1d3a…

MALICIOUS

PDF

32.8 KB Created: 2021-07-21 04:19:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 55842877cf0ef7738f50782e47957779 SHA-1: 7923db002c8a3024fda3f842d99e9275729b87ed SHA-256: f01fff0c469b1d3acb7e9721e5db5763c2240f718bd2eb66fcdce7f965c1dfbe
82 Risk Score

Malware Insights

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

This PDF document employs a game hacking lure, specifically mentioning Roblox and Robux, to entice users. It contains a high-risk link that redirects to a malicious website, likely serving as a downloader or exploit delivery mechanism. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a targeted attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/how-to-hack-someone-on-roblox-game-hack PDF link annotation
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://pcepsdi.org.ph/wp-content/uploads/fsqm-files/minecraft-hack-download_GM479516143.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_off000029d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29D5 22680 bytes
SHA-256: 24950d28744c9bfc1289591ad27be796ff9e340e3440cd90f7132f0f6d94d4f0
font_01_sfnt_off00005c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C67 18792 bytes
SHA-256: 9bec9b42a66a3fadd8300817ea8ed63094da1293d480634873ce68f71127e696

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