Malicious PDF — malware analysis report

Static analysis result for SHA-256 c792d6fc0b9d4b4b…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 20:02:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0d92c73c7bc158a426f0841d568c4997 SHA-1: 38a11c2ddc158ec0a52ed2eb9db517441e7539b7 SHA-256: c792d6fc0b9d4b4b69738ee14880daa98755ced989a2db474320334763da057b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game hacks and generators, specifically mentioning 'free Robux' and 'Coin Master' hacks. These links likely lead to malicious websites designed to exploit user interest in free in-game items. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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/431946152/how-to-get-free-robux-for-real-game-hack PDF link annotation
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/corn-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://jualgerobakangkringan.com/ckfinder/userfiles/files/to-get-free-robux_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_off00004905.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4905 26384 bytes
SHA-256: 4ae7721b625d46bc4a5699bfcf4247650443efe5f40f532d3062f9701b4b03ec
font_01_sfnt_off000084f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F1 18584 bytes
SHA-256: 4c8fb6f4ba3d8fd1a53aecf8e038afdea7cc6760123f6d2281f23f521b1068d8

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