Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ca4dc67773a950…

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 07:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6383a94c968cbb03bb5b3cb968df782a SHA-1: a66c1b6fdc7c7ac5a5cf0ac200888c8db4bb2d56 SHA-256: 29ca4dc67773a9503cf9fddc8a5467640caff21ed5e161f6daf42278a40159dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to redirector domains, specifically promoting 'game hacks' and 'free robux' to lure users. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates these links point to known malicious infrastructure. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-adopt-me-hack-game-hack In PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/robuxmaniac-com-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-robux-generator-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-airpods-tiktok_GM835599320.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-fashion-frenzy-games-free_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/cheats-for-sprinting-simulator-2-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/worst-client_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-cheats-like-rcm_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-jailbreak-redboy-hack_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-no-quiz_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_off00002e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E36 21832 bytes
SHA-256: cc16d4ae238a50109434bb1094c33b51c26a987ac3a24efb4decd336ec9f56c2
font_01_sfnt_off00005ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE1 19308 bytes
SHA-256: 1d6d529828a603e65e14b6285156acac3d11e3a25e7a00ad8dd7aee01cb73554

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