Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a384971d5ebd8af…

MALICIOUS

PDF

35.5 KB Created: 2021-06-18 12:47:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: af7b07b66d9e65a9deb6481a5598170c SHA-1: 80fc0582b5685c589036962fdcfcefd61c01c385 SHA-256: 2a384971d5ebd8af64e48b43b0ab6079a355d6d883b0bf96ca0a5fb540d976b9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to obtaining free in-game currency or hacks for popular games like Roblox and Coin Master. It contains multiple embedded URLs pointing to such content, with a primary redirector at http://netcdn.co/app/431946152/how-to-get-free-robux-on-ipad-mini-4-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scam attempt, likely leading to a malicious download or further redirection.

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.co/app/431946152/how-to-get-free-robux-on-ipad-mini-4-game-hack PDF link annotation
    • https://alimi.com.tw/upload/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/www-robux-us_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hack-coin-master-no-survey_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
font_00_sfnt_off000030dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DC 22820 bytes
SHA-256: f236f17f0919e5df6a52aa3bb9849e988316ec1714845e9ea5bedaef54a6ff60
font_01_sfnt_off00006421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6421 19528 bytes
SHA-256: 64eabfd74081e3e5de57e5f585f168a790668353ce71b1a3bb809acef9fb590c

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