Malicious PDF — malware analysis report

Static analysis result for SHA-256 24aca08fa6622883…

MALICIOUS

PDF

45.0 KB Created: 2021-05-19 00:10:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 435b0c1d4fc7d01d87222bb3949864f9 SHA-1: ad090d755ce2a680ab1a90e5488c42804ea5c7ff SHA-256: 24aca08fa66228833928d554a4fff59828fae4eb110bdb370a66ddc83b17f7d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a game hack redirect lure. The document body, though partially corrupted, also contains references to game hacks and generators, reinforcing the lure. The primary URL, https://netcdn.xyz/app/406889139/coin-master-game-hacks-game-hack, is likely the destination for these lures, potentially leading to malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/coin-master-game-hacks-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-safe_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_003_off000047bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BB 26584 bytes
SHA-256: 311530220ceb78646d3dca3078886202db256e0e0db2a2aca30d480a34048074
font_01_sfnt_off0000847d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847D 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E68 17976 bytes
SHA-256: 4c1d26c1fb4feed8092d99a8761960172faa49b0c213e7324f16c91828cd6f14

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