Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89a6d6c2d706c51…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 13:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 04f1f7e6b8e28aefba6486456cc548c9 SHA-1: a9f09379e1e864411510bd1f0420fd7abdeb6b0f SHA-256: e89a6d6c2d706c51dc6c75c4943e9662baa21aeaf27e0db3fd1d37438aab0bd5
90 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, presents a deceptive download button and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.xyz/app/406889139/coin-master-hack-unlimited-spins-apk-download-game-hack PDF link annotation
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-generator_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
stream_003_off00004b86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B86 25184 bytes
SHA-256: b63ce9200f338a6c6bef4ab970f5cb73a63f79e5d010a9e18fd93569c5d2a70a
font_01_sfnt_off00008411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8411 18916 bytes
SHA-256: 36b5946d0fa01df03061b9872aea65f63cba93bccd0378a8f0b0329212d0019c

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