Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a9b4b1873c84215…

MALICIOUS

PDF

43.7 KB Created: 2021-05-10 17:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6aa768600a5f5e198f438db300ff6c7b SHA-1: 83c42f29cdb43c14bbbe5e40012b85b33ab9f10a SHA-256: 4a9b4b1873c842154539e16db2dc2ee42b2c8040713edd5055b4c5cd35494a36
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites offering game hacks and generators. The primary URL, https://netcdn.xyz/app/431946152/hack-robux-game-hack, is flagged as a high-risk lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/hack-robux-game-hack PDF link annotation
    • https://pn-tapaktuan.go.id/pustaka/repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/instant-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/hack-coin-master-online_GM406889139.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
stream_003_off0000476a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476A 29140 bytes
SHA-256: 7052fdd60cb58bc9269c404e1f39aac4b6552c0def3968296992710c71413197
font_01_sfnt_off00008869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8869 18248 bytes
SHA-256: 9805bb7d0eadd4beaac6fd3b5d5d8b6e8e5d33c97ce909732e364f826719e5d2

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