Malicious PDF — malware analysis report

Static analysis result for SHA-256 620403ae16fec7d3…

MALICIOUS

PDF

44.6 KB Created: 2021-06-08 10:31:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a6e46c820a2fa65b2829f6813a85a4d2 SHA-1: 6bccae635f4ea91e723e2c00cbc8778ba8c3d261 SHA-256: 620403ae16fec7d3a6ee84a92d90c34480c82e29dedd56f806e035089ac491c7
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 0.9865

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.tw/app/431946152/dragon-ball-x-roblox-hack-pc-game-hack PDF link annotation
    • http://bogatyr.com/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/optifine-pe_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-hack-no-verification-2021_GM406889139.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
stream_004_off00004e81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E81 26528 bytes
SHA-256: c2b42ba33488cf533bfbf44709d525ad7c727fc77283a520b11a4b17502c1089
font_01_sfnt_off00008a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A15 18792 bytes
SHA-256: f814ceba14c5ee4dc4321a204ad35dd492b6d863f25d64a9bcb2de6df74c60e8

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