Malicious PDF — malware analysis report

Static analysis result for SHA-256 9281077f62f096d2…

MALICIOUS

PDF

47.5 KB Created: 2021-06-13 21:43:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9c9d38db0b4d0a6c917eaf51440b4601 SHA-1: d0d5bce20c646c9eec2a9742b78e1ed1858be9f5 SHA-256: 9281077f62f096d2c39e566ec89c9a9aa5b927763636cadf01a270da519316f3
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 0.9013

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.co/app/431946152/free-obey-roblox-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/pokemon-go-free-money_GM1094591345.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/thanos-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-generaters_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/instantrobux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-clothes-on-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B6A 29140 bytes
SHA-256: 4150744df7d463457277ddd0abd7e07e8829e134f780e918824d148f7c71270b
font_01_sfnt_off00008db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB1 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off000097dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97DC 18128 bytes
SHA-256: 35f67710f6226889f8942fc439fec661fdaaa4cf5093d00f04194eb584c343c9

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