Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1b6f9d24361318b…

MALICIOUS

PDF

45.2 KB Created: 2021-06-04 00:38:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3752056c2303956230586ea594ce3587 SHA-1: ea53be7ad50841cdf4c41fe7da0019749a75409b SHA-256: c1b6f9d24361318b0dc4b6cd9c6ea2c4b64fb88a3282da9e7c43285e46c9129b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a game hack or generator, a common lure for users seeking free in-game currency or cheats. The ML classifier strongly indicates maliciousness, and the embedded URI points to a suspicious domain. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely to a site that hosts further malicious content or phishing forms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/easy-robux-game-hack PDF link annotation
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/pokemon-go-basic-vs-premium-rewards_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/rbx-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/pokemon-go-free-items_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/wurst-18_GM479516143.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_off00005336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5336 26468 bytes
SHA-256: a4585c3b834e08af1eaab9669665ea6e1e35cfb83cc8ee69ad552380a1633163
font_01_sfnt_off00008e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E37 18260 bytes
SHA-256: 6f89279168fd50a5f3cec5bfd170c68a2c9d13d585bdac07df4f7428a81fa8a5

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