Malicious PDF — malware analysis report

Static analysis result for SHA-256 59eea7dd1c9bcf9f…

MALICIOUS

PDF

34.1 KB Created: 2021-07-08 07:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dd2a9f0dfb413a1d139ffe4c418b11d9 SHA-1: 72a4cfe8ae657da4f987441ec883a7c4b4ba64fc SHA-256: 59eea7dd1c9bcf9f364f9150520c22c693f0f242eee2cd17fb905c9e0c0f1938
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a lure related to game hacks and free currency, directing users to potentially malicious sites. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's designed as a redirector for game hack lures. While no scripts were explicitly extracted, the nature of the lures suggests a phishing or social engineering attack.

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.tw/app/406889139/how-to-hack-mcpe-master-coins-game-hack PDF link annotation
    • https://www.apartmani-mestrovic-krk.hr/files/free-tiktok-that-you-dont-have-to-download_GM835599320.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/win-free-robux-robux-robux-free_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-its-free_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-in-inspect_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-play-now-for-free-the-scary-elavator_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-uno-scirpt-hack_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-roblox_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-how-to-hack-robux-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/guess-the-character-roblox-free-robux-answers_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-all-gamepass-items-in-roblox-nypd-free_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/hack-de-robux-2021-abril_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/2021-roblox_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
font_00_sfnt_off00003162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3162 22144 bytes
SHA-256: fddd992ee36ebb4e1af7e5012cd784cc50486be6ffcfbde3ab44d2b907b7168f
font_01_sfnt_off0000625b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625B 18344 bytes
SHA-256: 0d31b036bdcd96e189ca4508b1245f70917a7d6f0a541cc48812d863710d68c6

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