Malicious PDF — malware analysis report

Static analysis result for SHA-256 28002fac11af91b0…

MALICIOUS

PDF

54.6 KB Created: 2021-06-03 13:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 11c5c79f8ab8ddb84f5a23a8f2d07689 SHA-1: aa01fa71e22eb33e4b76683aceb6a5cdc1a8e633 SHA-256: 28002fac11af91b0391099aa6ea63bd83de1e7a6be93bc6c7f363343992b1d72
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a game hack lure, specifically pointing to a URL designed to entice users. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a malicious site, likely for further exploitation or malware delivery. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9497

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/479516143/minecraft-pocket-apk-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AF 25404 bytes
SHA-256: 61260891e95c96f27a7439c3cf076c74b3589dac5da4bf29877e055f80174d9f
font_01_sfnt_off00008aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AED 8248 bytes
SHA-256: 6bc25fdddee52b9707702341f5a65cfb8c84cc39e5a98694ad5b565fbce9c3dc
font_02_sfnt_off0000a4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DA 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000b367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB367 18208 bytes
SHA-256: 43fabaa7baa2069dea089d396f6a12271a87df7a231cffc83c7f5458ac3d8eee

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