Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50597ff147e479c…

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 04:59:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 264f4775a2e7b2efde3a1b1027b3a67c SHA-1: bb49ca084dcbfac7d575611addc32f872b571f8d SHA-256: a50597ff147e479c8ec5864402f4871a267a1d9f7f9da2ee22896d2748636913
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 0.9865

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/descargar-hack-roblox-robux-game-hack PDF link annotation
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-get-the-business-cat-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-fast-robux_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/glitch-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/cheat-engine-roblox-speedhacks_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-play-roblox-on-phone-for-free_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-roblox-c4d-lightroom_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/nuevo-hack-generador-de-robux-de-roblox-by-pignoise_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/which-stuff-are-free-on-roblox-category_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/robux-generator-free-no-password_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-hack-robux-from-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-robux-games-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-get-clohes-for-free-o-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-get-free-roblox-on-xbox-one_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/you-to-get-free-robux-no-hack_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-decals-for-roblox-work-at-a_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/roblox-cheat-engine-noclip_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BE 25164 bytes
SHA-256: e571ef990e6da5ecf149fb3ccd74c5b22301956255f409e640c9957bcfa1e872
font_01_sfnt_off00008b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B50 18776 bytes
SHA-256: 315afa69a7e8bcd495a18dc785e829c57329687f118b7732ed81d0bb53ca8dbd

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