Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be5afd109a71625…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 04:32:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4d39b4e7977ad613c427533e133cd10a SHA-1: 69aaf87fb1ca062a96633d5e397468dc95b32c7f SHA-256: 3be5afd109a71625cc95cec48e54958c23cb2676f2a7f99665301f51e0378870
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and lures related to game hacks and free in-game currency, specifically mentioning 'Coin Master' and 'Roblox'. The primary URL, http://netcdn.tw/app/406889139/coin-master-fb-free-spins-link-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to redirect users to potentially malicious sites for credential harvesting or malware delivery.

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/406889139/coin-master-fb-free-spins-link-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-police-uniform_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-make-roblox-pants-for-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-tower-of-hell-hack-script_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-script-builder-scripts_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-obc-hack-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-demon_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/its-free-real-estate-roblox-id_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/moon-active-games_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD5 22384 bytes
SHA-256: 514822636104d88d5602ee72b1ad2083b8d35ca9c2c689d480b9d3a2ef3b0e18
font_01_sfnt_off00005f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 18504 bytes
SHA-256: 6fae6f2ed4f6bec01b64d1670d3a971b1a45bf61d7518176b6a7fdaf35e32234

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