Malicious PDF — malware analysis report

Static analysis result for SHA-256 9007a0e2f4f25148…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 16:06:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7abd9d23dfaeba6529788f53798a4b78 SHA-1: ccaeb19c9abaafc0f4333f28d5a44adf0130642c SHA-256: 9007a0e2f4f25148d010c51f102a1bb908e658760ceb9dff315c722b1cdacca6
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 0.9971

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/static-moonactive-net-free-spins-game-hack PDF link annotation
    • https://www.knjizara-harfa.rs/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/install-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-o-get-free-coin-master-spins_GM406889139.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_003_off00004b48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B48 25476 bytes
SHA-256: 80ad19b0f4d049b181d8e4670b2b318acbe7de39b45cc31dd5f90214251cccb9
font_01_sfnt_off000084e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E2 18000 bytes
SHA-256: 550c58a86183c192f11bd993c378cabcbb9cb434b0a2a3ed80188f155553ce19

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