Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c28c22fffd4977a…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 17:04:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f58cd17b1c760102bcece73a54d503ba SHA-1: 6a16a7d75b130413245885ac679af6631c1a30b6 SHA-256: 9c28c22fffd4977a50b3737f07b7968f187ff315294199b658ae2c20fa61156c
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 0.9980

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/how-to-get-100-free-spins-on-coin-master-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-how-to-get-free-obc-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-pillow-simulator-free-pillows_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/fly-hack-roblox-script-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-esp-hack-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-minecraft-texture-packs-java_GM479516143.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_off000033c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C3 22964 bytes
SHA-256: 27d1f59cfa726b1aa17a594423b074d1bef3c355c0c3b2c7c03201580f991632
font_01_sfnt_off00006730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 18616 bytes
SHA-256: 75e6ca0d846814030aeb8d238a6779e7a1e1c8622c374b69a8320c66161e23d2

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