Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10a6cac2a6cc3f5…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 22:37:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 49d9c44b5bf7cbba26df6cf5b32a628d SHA-1: 14e87a7c01f111cf3bebba6e72ee6c3ebdebc70c SHA-256: f10a6cac2a6cc3f5a79eefbd3f32b7a11101e60bdd17b15525081d17784578da
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for free Robux or game hacks, directing users to the URL http://netcdn.tw/app/431946152/free-robux-no-email-game-hack. This URL is associated with a high-risk heuristic for game hack redirects, indicating a likely phishing or malware distribution attempt. The document's structure and embedded links suggest it is part of a social engineering campaign to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-no-email-game-hack PDF link annotation
    • http://www.my-travel.com.hk/upload/files/the-bird-says-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-unlimited-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-without-human-verification-on-ios_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-in-inspect_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-hack-a-account-roblox-v3rm_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/best-way-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-roblox-scam-messages_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-admin-commands-on-any-game-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/cheat-code-roblox-pc_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/cheat-engine-30-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-gift-card-codes-free-unused_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/script-hack-roblox-piece_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-free-coins-and-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
font_00_sfnt_off00002fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCD 22396 bytes
SHA-256: a1a762766fd1f7a3a63b9e7cc88c3b7b3b058937d4f68b90cfaaee0afdc05678
font_01_sfnt_off000061c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 19168 bytes
SHA-256: e6feb406b33ce3eed24c310326ea9a59558e0a782f86ce6eecd6a3cca8ccef3d

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