Malicious PDF — malware analysis report

Static analysis result for SHA-256 60eb4112c61318dd…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 12:17:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 165ebefdeefbe174b159e776571284d7 SHA-1: 4a31c303301bd118d5902f5eb382296822f094b8 SHA-256: 60eb4112c61318ddbfbe3dd0e7816bd9c4b9f5a1aae17d8b4c49e317d65909a2
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 0.9980

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/431946152/how-to-buy-robux-for-free-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/youtube-free-robux-november-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-shavacadoo_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-tycoon-hack-no-donate_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-on-samsung-tablet-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/code-hacks-for-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-twister-murder-how-to-hack-credits_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/spin-link-coin-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/how-to-get-robux-no-hacks-needed_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/rob-hacker-online-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_off00002ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF3 22436 bytes
SHA-256: 8d9d3b7efe5774d9415df3d92bb0bf0c6bacfbfe81778e7b2123328fabcb32bb
font_01_sfnt_off000061fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 19060 bytes
SHA-256: ef5b7f60cf1fa637b1bfb552d40134022e1bfb8af4691738e10ad17902957aec

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