Malicious PDF — malware analysis report

Static analysis result for SHA-256 2445e052bd4eb288…

MALICIOUS

PDF

48.1 KB Created: 2021-05-11 19:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f9ed35f60037f9711340eae6d4dd81c2 SHA-1: 07e9c2bea5f958866ac579d8f2b3772088af0361 SHA-256: 2445e052bd4eb2882087d92ab1f6e2b950eef405cc2a7baa7b414ee5e8e20ff3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a lure for game hacks and free spins, indicating a social engineering attempt to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to exploit user interest in cheats and freebies to lead them to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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.xyz/app/406889139/free-spins-for-coin-master-game-hack PDF link annotation
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004982.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4982 25244 bytes
SHA-256: 4fbf49f5031ef349a7a878e7715550527420060cde3d184a28dcaf23510cb8d8
font_01_sfnt_off0000822c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822C 4172 bytes
SHA-256: 164edaea18315c9028f8849dd1bae3426477fca4a273e5fe1cd78392e29f1975
font_02_sfnt_off00009078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9078 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A67 17884 bytes
SHA-256: 7a686c540965cac69e1923dfbb6a78ce3f92ec60dbbf6836da21cbb58cd4d6cc

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