Malicious PDF — malware analysis report

Static analysis result for SHA-256 181340e7d745a4cc…

MALICIOUS

PDF

35.9 KB Created: 2021-06-22 03:04:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1ee3e02d8a296edfefff713afffa6bdc SHA-1: 12d6666d0031a5d20f936ce8a1b26f3c68d9606c SHA-256: 181340e7d745a4cc5a41f7512030bda688761849a359138593584caf384ec033
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.co/app/406889139/free-spins-coin-master-2021-today-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/mac-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-danlod_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-and-tix-hack-no-download_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/pokemon-brick-bronze-hack-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/buy-tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-tiktok-coins_GM835599320.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3410 22972 bytes
SHA-256: 279139770f1c8828a066eaa641ae0f76960cdd9f5e77014926890037b54936f8
font_01_sfnt_off000067a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A7 18928 bytes
SHA-256: dadcf5174bb2e6041b94f83e832c5e3e9a18ba888fbfa9b44f22d907c203bba1

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