Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b98ee88c821975c…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 22:57:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5becfabc906e23726afd1990628b7dac SHA-1: d4deaf669b46187d4949eee11183f0df17a687b2 SHA-256: 3b98ee88c821975c70cd6b7e67a91a4682e9a94bc46d13093107b72ab12259b8
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 0.9969

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/431946152/give-me-robux-now-game-hack PDF link annotation
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/is-minecraft-java-edition-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C12 26040 bytes
SHA-256: 11d239fc8d135aa51f694577e3266c8c89de1dad98967752ef15dd8cea0519ef
font_01_sfnt_off000086bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BB 18444 bytes
SHA-256: da387504e4ee90144f6399ec13e2f6eb5be90933d390e8f78ca10c807e4b036a

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