Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a187714578441f2…

MALICIOUS

PDF

44.3 KB Created: 2021-06-08 16:59:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3496161d99315d590308f15d45ed8527 SHA-1: ab56383f96298685aa22af5e3ddf020658c07c96 SHA-256: 8a187714578441f2b3941bab96fd21c39f31ba562f23ee010136f9d661c5c804
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 0.9865

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/how-to-get-free-robux-on-roblox-october-2021-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/play-roblox-for-free-online-now_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-daily-free-coins-link-today_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_off00005029.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5029 24540 bytes
SHA-256: 80f73b9b68f7e6ff37ea1e7f1ee32836deae9ee11b6163ddde1a630c19c0f4ff
font_01_sfnt_off000088e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E4 18756 bytes
SHA-256: a8004a9646af806e521b7483842275d5f5034ac3793da4270c0e086cd32bb129

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