Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35f23ca24273278…

MALICIOUS

PDF

49.3 KB Created: 2021-06-11 03:33:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f9c9c79db42a1805a03b466a17309322 SHA-1: 12c449020ad458ee5c5efa0b26b776b9b9fc7e2a SHA-256: f35f23ca24273278b4cc94c1a90f24c437dba3332b14fcdc7e7f0f527afb44ee
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure further supports a malicious intent. The primary malicious action observed is redirecting the user to a potentially harmful website, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-online-multiplayer-games-like-roblox-game-hack PDF link annotation
    • http://pustaka.stikesperintis.ac.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-cheat-codes-weight-lifting-simulator-3_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/pokemon-go-free-or-pokeball-plus_GM1094591345.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-atack-on-titan-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/prison-life-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-speed-hack-in-legendary-football-roblox_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51B2 27328 bytes
SHA-256: 2f828ffbeb6375b3fea1fcb7c549b6f09c1d900113ca98af1e98b26372c8efbb
font_01_sfnt_off00009096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9096 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A45 19524 bytes
SHA-256: 3ffdaeed8b264c71ac64aebe02bd07535e7f162e4ed4c6818e3901f91660b411

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