Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b5e2e70ff5556f9…

MALICIOUS

PDF

45.1 KB Created: 2021-05-13 10:15:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a1edb36af8d40abf4ce57649600d8991 SHA-1: cd66db85eb9a06740b337051d0315868d6d36f81 SHA-256: 2b5e2e70ff5556f9e5f33df52007d343e65a1de5a58967a97a0b3a4e2cd61c43
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically Roblox, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a malicious site, likely for further exploitation or credential harvesting. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/431946152/hacks-roblox-game-hack PDF link annotation
    • http://www.tdbaska.hr/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4941 25340 bytes
SHA-256: 31f44f487711836f510536c0e2acf28e30f861c536c68f241124777789d99ec0
font_01_sfnt_off00008409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8409 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00008dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC0 18184 bytes
SHA-256: 7ce99462d7db30d9d686f16fdffa062e1f918298e62a3f0da8fa4bf2d2fabb79

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