Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bf250bcf986bd7…

MALICIOUS

PDF

47.6 KB Created: 2021-06-04 03:21:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 217bcc816c5d9b871f9d8cc3d257a1c9 SHA-1: 11f57f1a0000a8785993adba36f29355bf6d40d1 SHA-256: 96bf250bcf986bd76b019de29bfe69b09180199528f8547e184022340f33c4eb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9769

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-bedrock-free-game-hack PDF link annotation
    • http://lib.untad.ac.id//repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • https://education.minecraftIn 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_off0000535e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x535E 25504 bytes
SHA-256: 461d07eb426373a67d48bffe4983a0bf12d1cc63484813df0f5c3d6e223d3ed0
font_01_sfnt_off00008d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7E 2940 bytes
SHA-256: ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb
font_02_sfnt_off0000978d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978D 18268 bytes
SHA-256: 421dc37018d5e6f1467ffbccbacebf5894202cb157ac672e86022266516fa266

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