Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10cb9b498bc7e7d…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 05:14:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bf641edb0525e823e012bf726e3fd28a SHA-1: cf28ec5dc6084c842aa4ca0e473f5d8924362181 SHA-256: d10cb9b498bc7e7d4877e8f60e079ed524e6dcdb676661a9cc043708e9f4594d
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 0.9769

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/406889139/coin-master-link-daily-get-free-spins-amp-game-hack PDF link annotation
    • https://library.pqm.co.id/repository/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-coins-app_GM406889139.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_off00005020.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5020 25656 bytes
SHA-256: 1f74a2b6dd9437a85ba0c8eaece86d4a5e21a3ee6b84d9b193d9f48819778db0
font_01_sfnt_off00008a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7B 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9466 18740 bytes
SHA-256: 3c4f21502df3cd9acdde9268991fc9ac05791a4d697f365fbbd9610c3169f79a

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