Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f909c763085397…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 04:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3459ac73f160d3a61a37a1384df89049 SHA-1: 12ee4ee0d4a52bca0d3f8e45a356f9aef03d6f59 SHA-256: c7f909c763085397023674882a0128bfe1f8e31631713d844bd885dd1ef79502
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 0.9980

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/406889139/how-many-levels-are-in-coin-master-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-your-robux-back-without-hacking-or-buying_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/blox-event-world-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/rbx-com_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-make-free-robux-in-roblox-2021-no-fake_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-boy-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/kram-barry-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-a-free-private-server-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-free-catalog-items-pastebin_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-punch-animation-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-cheat-engine-speed-hack-code_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000335f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335F 22556 bytes
SHA-256: 5d78c940c66609397e4bee593af08a6a500e2902cdc3b9447aefefcf6df7c123
font_01_sfnt_off000065e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 18368 bytes
SHA-256: a3184096f73a5c849ec1e48a1332c6008fb783e1a923439299745952a2be3950

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