Malicious PDF — malware analysis report

Static analysis result for SHA-256 17945459a82f0dec…

MALICIOUS

PDF

32.4 KB Created: 2021-07-03 16:39:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5e289666eb9cf0c16d3b98e41e1d5f41 SHA-1: 9634cb28448de8d128d682a2bc7a05dbfa338240 SHA-256: 17945459a82f0dec4b3eb010407557980b9553deee23951dfdff86016258d14b
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 0.9824

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.tw/app/431946152/how-to-hack-someone-on-roblox-game-hack PDF link annotation
    • http://katalog.gemalibrary.net/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-on-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-any-roblox-face-for-free_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/pokemon-go-free-hack-apk_GM1094591345.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-make-a-free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-roblox-exploit-lua-script-executor-free-no-virus_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-online-free-download_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_off00002a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A64 21508 bytes
SHA-256: 1b5a5704adda71e4960a7d9667e8c3ce9bf3b879f9a301e37e6db4a0b840e389
font_01_sfnt_off0000597f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597F 19080 bytes
SHA-256: 963276ac3658a4f1303280410bd3aafd1a833c38ea79ed0af769875644ea58f7

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