Malicious PDF — malware analysis report

Static analysis result for SHA-256 50f65f95e5fd958e…

MALICIOUS

PDF

55.4 KB Created: 2021-05-17 00:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8eaa00a861724eecb8b65786378b78ff SHA-1: 08254296c7a096b8034b1fd22bd8e1db5350296c SHA-256: 50f65f95e5fd958e2777d6b7b94247a627c9fe612075bf1634ae7b962eaae567
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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/coin-master-free-snacks-link-game-hack PDF link annotation
    • http://behsanroshd.com/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b44.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B44 27060 bytes
SHA-256: a94a79e3479cb94c0a18eba87bc97b38b4f8a5a68471053c35f180c522c8dd42
font_01_sfnt_off00008ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD6 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000095a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A1 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C6 17880 bytes
SHA-256: 09034ee7a1f9989932e9db65c2957a4d9f61d6fccc52a1ac5f57be2128ce07e5
font_04_sfnt_off0000c987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC987 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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