Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0b7a2919f9fe24…

MALICIOUS

PDF

41.8 KB Created: 2021-05-22 23:17:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: de1c57bf47173c655b696b440d30b73f SHA-1: 6b19fcf3854473fd8737e5311bebf5aa8f9864ad SHA-256: 2b0b7a2919f9fe249261926145b9ecd5716d46d7571d09d6c6dfa98dc0a0e274
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 0.8120

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/free-robux-no-download-game-hack PDF link annotation
    • http://agritrade-ukraine.com/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33AD 28004 bytes
SHA-256: 4fef69ab550606942be955e323e55a02cd6363bee494e60012bf54b2cd51d967
font_01_sfnt_off00007378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7378 3656 bytes
SHA-256: 63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20
font_02_sfnt_off00008032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8032 18824 bytes
SHA-256: a83584a15d83770571e134086905248a9fe783ccc3b424d06d308178a7ec7f42

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