Malicious PDF — malware analysis report

Static analysis result for SHA-256 24cb03e1f9c92e4e…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 04:46:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b1e68f33d1d6a09c4b2aab267175d6b4 SHA-1: c3f43726f27a3b376697c5f927b5e7ebbc4a2277 SHA-256: 24cb03e1f9c92e4e603567b356e8c55b848e5ac88cd8019dd34a4ff76acbd52d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Coin Master Hack Tool' and directs users to a URL that is likely malicious. The presence of multiple game-related lures and the high ML classifier score indicate a malicious intent to trick users into downloading potentially harmful content or visiting phishing sites. No scripts were extracted from this sample, but the embedded URLs and heuristic firings strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-tool-v1-9-download-free-game-hack PDF link annotation
    • https://www.bmta.co.uk/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • https://www.bmta.co.uk/images/robux-scam_GM431946152.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://www.bmta.co.uk/images/free-robux-generator-2021_GM431946152.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_003_off000047bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BC 24776 bytes
SHA-256: fbac923c4b9cea720f5de40a5b011d617b19a036b7a3e44ab00e2ebbcc6a336e
font_01_sfnt_off00007fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE5 18864 bytes
SHA-256: f6546c931e30ebe5b0f44735796ae8f725f630439fc19eae70f9e7cc234a2321

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