Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d83f9d547cf0cd…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 09:40:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3635bed23747a6a363b2f61ed52c83ec SHA-1: 8082a62b1fa9d88f42fd472cf8ae98b33f4114e0 SHA-256: a3d83f9d547cf0cdf59542544ba8239bbd84525c1ecf602ee0b9035ba312d870
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/latest-free-spin-coin-master-daily-game-hack PDF link annotation
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-download-pc-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-urbis-level-cheat_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/como-descargar-hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-spins_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/hack-coin-roblox_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-how-to-make-t-shirts-free_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/team-panda-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/comandos-para-free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/master-coin-free-link_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_002_off000033c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33C7 23248 bytes
SHA-256: 9fc07d349b02a62bd9600f71bc5a4d843a10f775f959b70bf27cb3fc7e67df8a
font_01_sfnt_off00006858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6858 18596 bytes
SHA-256: 42b1af9d9b90524af15ec4cd78a65ae313c0aa54134b2563371c09b733265528

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