Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb29b3aba1bc0ed…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 05:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1df27c97db575dbc2a77903a2ae14129 SHA-1: af572e39711305c49e3682e7d65810fc7d03da1d SHA-256: abb29b3aba1bc0edb78a734d238a939783cf22d0c733e85550654675b29afeb4
122 Risk Score

Malware Insights

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

The PDF document employs a lure of 'free Robux' and 'game hacks' to entice users. It displays a fake CAPTCHA, a common social engineering tactic to trick users into interacting with malicious content. The document contains numerous embedded URLs, many pointing to sites offering similar game-related cheats or generators, suggesting a campaign focused on credential harvesting or malware distribution. No scripts were extracted, but the PDF structure and heuristics indicate it's designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-scams-how-to-stop-them-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/hackaron-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/mad-city-roblox-cheat-synapse_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/furk-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-roblox-games_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.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
font_00_sfnt_off000030c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C2 22064 bytes
SHA-256: 4eabc577fdc17c15bdd7a82d50abacc962262f14fe9a91f1167964cd8b0decb0
font_01_sfnt_off000061a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 19584 bytes
SHA-256: adf4c638bf061e3d839d4b6f5a9d6c5fa3eacd9f51b206ccf65db99c48299734

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