Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7fdc429870cf09…

MALICIOUS

PDF

33.6 KB Created: 2021-06-25 16:43:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 90f96f0b42aecde72216c1c146138d0b SHA-1: 0db15f2e719d7399602fedb259598a1e02a24fac SHA-256: 1a7fdc429870cf094b82bcbeb89a26f97b3c36139afb843a64142d8a247187cd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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.co/app/431946152/free-robux-on-chromebook-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cartoon-roblox-character-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-ooga-booga-chest-spawn-cheat_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/what-games-on-roblox-give-you-free-things_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/bux-free-robux_GM431946152.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_off00002e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E99 21504 bytes
SHA-256: 3a01c4637e5c51944e5fec4cdb2486b0f9751a7e22786f44b23762ad2ea8438e
font_01_sfnt_off00005dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC2 19312 bytes
SHA-256: 314b696397f4c1bc089eacffa71ba42ff02f5991a57407c2aef53bae408bf694

Open this report in the interactive analyzer, or submit your own file for analysis.