Malicious PDF — malware analysis report

Static analysis result for SHA-256 144762a0aa30caf4…

MALICIOUS

PDF

48.5 KB Created: 2021-06-09 05:44:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e0485d011ed1eb463b93ec4e291e225 SHA-1: 5aa0983681b2a72482c7088682bc957bf979acb6 SHA-256: 144762a0aa30caf4674d5b28ec3047ee37c1e25475649d62d41d7ec57e22e3d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL related to Roblox hacks. The document body, though partially corrupted, contains references to 'Roblox Aqua Hack' and the same URL, reinforcing the lure. The presence of multiple embedded URLs, many of which are also related to game hacks and cheats, further supports the malicious intent of directing users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/roblox-aqua-hack-game-hack PDF link annotation
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-hack-ghots-simulator_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/client-minecraft_GM479516143.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-kohls-admin-house-infinite-edition-hack_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/bloxfree-free-robux_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/tiktok-free-view-59_GM835599320.pdfIn PDF document text
    • https://balibanknews.com/new/public/ckfinder/userfiles/files/what-is-exploiting-in-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
stream_004_off000053f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53F0 31200 bytes
SHA-256: 4bf4c6060a01041221e0d8b18bc8b304198720a801ebb8d71dfe1e7122b6eb20
font_01_sfnt_off00009a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7C 18492 bytes
SHA-256: 8913d75ef808f39429baaa764e839b3da0d793d5f0b30c42f5312d71ba60bcc8

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