Malicious PDF — malware analysis report

Static analysis result for SHA-256 496e3713c7a52541…

MALICIOUS

PDF

45.4 KB Created: 2021-05-11 15:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1e59385a694974dbe3c56ab38ddc1b4f SHA-1: 025de285c786d440095af9e20c33b8b513246737 SHA-256: 496e3713c7a525413b3377c161e9b688e49707a88dd4d013e04cc97a767b2bb4
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 0.9507

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/how-many-levels-are-there-in-coin-master-game-hack PDF link annotation
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-114-4-download-free_GM479516143.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_off00004b80.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B80 24968 bytes
SHA-256: bc2f2e0363471deb7f6f261b8b667a43778e31d1b3f9feb0329600397d23aaee
font_01_sfnt_off00008432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00008f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F36 18244 bytes
SHA-256: 7a3e09ddd81ff0bf88cf020c99e068e580145ca5d489a9015f3b374a3ae3c451

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