Malicious PDF — malware analysis report

Static analysis result for SHA-256 37b50408b994fc10…

MALICIOUS

PDF

46.5 KB Created: 2021-05-17 10:51:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ec1201b47cdc312b42848f709c8ed277 SHA-1: 8a3d12b86a6211c16e64db2c648b021539021cfe SHA-256: 37b50408b994fc10d6021341c6a398a5e73f70d04744a8c2cc62f6167437b4cf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a document body that explicitly advertises 'Coin Master Free Spin Link Today 2021' and 'game hack' lures. The ML classifier also flagged this PDF as malicious. The primary link directs to a suspicious domain that appears to host further lures for game-related exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-free-spin-link-today-2021-game-hack PDF link annotation
    • http://webstan.be/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://webstan.be/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://webstan.be/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/how-to-earn-robux-fast_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_off000049d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D7 26532 bytes
SHA-256: 230385305d46b0382dbd20982b2fac27a720f1f8b61f765f03aca88f380c7892
font_01_sfnt_off00008686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8686 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off0000918a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x918A 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f

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