Malicious PDF — malware analysis report

Static analysis result for SHA-256 a810038383fa3990…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 19:22:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c7af77eb9664fc00d32a93b91ee47175 SHA-1: e44fd9ea2d7bb6fe851526fcb72d9f91b6ab7d9a SHA-256: a810038383fa3990a8b6bfbb1ac2847be542963be87627cb84ac8654236136f1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a call-to-action lure related to obtaining free game currency, specifically 'Robux'. The primary link, http://netcdn.co/app/431946152/to-get-free-robux-game-hack, is identified as a redirector to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to direct the user to a potentially harmful external resource, 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 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/to-get-free-robux-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/pastebin-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-money-hacks_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-in-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/best-free-non-virus-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-today-no-survey_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/does-roblox-get-hacked_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/youtube-roblox-how-get-free-animation_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-free-robux-game-no-password_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hack-phantom-forces-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-cheat-free_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_off00002f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F35 22496 bytes
SHA-256: 4567758b7da2e8b723be6d99ab3a3598a7b854ef43ce5ed219fd83c4732c8349
font_01_sfnt_off0000616e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616E 18820 bytes
SHA-256: 8945f1685ed6de98f8048baf7c49d81d2d868232d273679e20707c637152a071

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