Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30d4cae69df95cd…

MALICIOUS

PDF

47.3 KB Created: 2021-06-09 04:48:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 645f4ac8f5fc1715000e3d0691778383 SHA-1: 15506c9a651594ffc041dee1467079d687e38d8f SHA-256: a30d4cae69df95cd4762185710825f55a68b74b616288f5a22665f64fea5e6ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/flame-gg-hack-robux-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hacks-para-roblox-tycoon_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-dinosaur-simulator-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-app-android_GM406889139.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
stream_004_off000052d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52D8 28240 bytes
SHA-256: 498f41985b0e1244c0aa49203bdde0141a771fc3f41c620db3b84dd8e94df525
font_01_sfnt_off0000942f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x942F 19036 bytes
SHA-256: 48e8150eae4358d0a1854e1f6464899b9d4217a9c18d8e72d1b0ffb1a19fef69

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