Malicious PDF — malware analysis report

Static analysis result for SHA-256 6962ab19c26543f5…

MALICIOUS

PDF

46.3 KB Created: 2021-06-11 09:46:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 482d78c61f28ab6feecf94973d1b558e SHA-1: 73abd6b7914779f8fb6242d2a0ccefadb115ac7a SHA-256: 6962ab19c26543f5acc60e7d438b829688a31bde63e57a17ce23315f2b05f06d
82 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.tw/app/431946152/mm2-roblox-hack-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/flob-fun-robux-hack-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-hack-in-roblox-and-be-dantdm_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/funny-free-roblox-t-shirtd_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-be-a-real-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-genorators-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ec8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC8 24520 bytes
SHA-256: 3bf626d8fbc2b7fa940a4fb316e4051f81d5b5ba6d7f3f6d6b57e101f055f3da
font_01_sfnt_off000086fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86FB 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000090aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AA 18760 bytes
SHA-256: 871daa3bcda958a10158073a2d50b19e2ca6bf3dd5608af7b8c3763a6cf0907f

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