Malicious PDF — malware analysis report

Static analysis result for SHA-256 b91ca7cdfeb83f18…

MALICIOUS

PDF

40.1 KB Created: 2021-05-19 09:09:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0af776eda22cde2f83016565190a4d60 SHA-1: 668deb8b7c4df603c4d017eda4c7214ea74dfca6 SHA-256: b91ca7cdfeb83f181a919ae142a77c105d4bd7ef23209be333bd1ecd6bd9727b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on a malicious URL. The primary URL, https://netcdn.xyz/app/1330123889/pubg-uc-in-pakistan-game-hack, is identified as a redirector for game hacks, strongly suggesting it leads to a payload download or further malicious redirection. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a social engineering attack aimed at tricking users into downloading and executing malware.

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/1330123889/pubg-uc-in-pakistan-game-hack PDF link annotation
    • http://www.zdravazena.sk/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/village-coin_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/roblox-devil_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/update-coin-master-free-spins_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_off00004229.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4229 24140 bytes
SHA-256: 9f86bfc55b7e4b2bc27a5c717ce4d92ecff97462b466418a8790e4fe8cfd361b
font_01_sfnt_off0000798c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798C 18520 bytes
SHA-256: 1c24415292725815fe747dba1c05139343ff84d17409eeccf65121856644de4d

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