Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed3288acb1ae8fb…

MALICIOUS

PDF

43.3 KB Created: 2021-05-19 10:40:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: aaa2ac26a23e44e685a8703134c44079 SHA-1: 97b71e199843dd4b4595e9187d7acbd4f510bcec SHA-256: 7ed3288acb1ae8fbc5942d166e08fa239ac882b9e11be475e9ce18eb13ca7cc6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to URLs offering game hacks and cheats, such as 'minecraft-pe-apk-download-game-hack'. This lure is designed to trick users into downloading potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-pe-apk-download-game-hack PDF link annotation
    • https://www.gymun.cz/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/roblox-free-skin_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spins-coins-coin-master_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_003_off00004c28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C28 25092 bytes
SHA-256: 7a05c5e0f259993b2fd7a7f74355267f327e3bed0695617be09bf7459c51b938
font_01_sfnt_off0000858d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858D 18788 bytes
SHA-256: 8791d3cc95b23c4b4e10828445a3a5a1b9cddfea01917aff66a6701f48000f7b

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