Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8584fda2a3a25bd…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 22:22:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5d6dcc4c745db67148504491b5800147 SHA-1: a2734b7c120db71386a06f5f686f2162680bc807 SHA-256: f8584fda2a3a25bd237140ad4b99f6969f3f50bfa02eeac5611c9b938396bd23
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and embedded text related to "Robux scams" and "game hacks", directly linking to malicious URLs. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button lure further support this. No scripts were extracted, but the document's content and structure are designed to trick users into visiting malicious sites.

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/431946152/robux-scam-game-hack PDF link annotation
    • http://stitqi.ac.id/website//repository/tiktok-free-views-website_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/pokemon-go-free-quest-rewards_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-a-bunch-of-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/tiktok-free-view-500_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/robuxfree-con_GM431946152.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_off0000359d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x359D 22184 bytes
SHA-256: d1785c50f3573c3c25fdb2829dfc72497f6c472e859e67648fa718bb113db3a6
font_01_sfnt_off000066ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AB 18812 bytes
SHA-256: 4ffaf6f842fcb0c6b0921ba835fae5c2fe515a7d00dacf83ff08996cba6db885

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