Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5c1569e033aa81…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 06:51:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c762e10ae4a28d51427cfc8becc2a1d3 SHA-1: 6a0965d607d87c31fedceaea55f8963d3f7d4562 SHA-256: 9d5c1569e033aa81918734a179a1242924f7ac1193e81f7c7f8a0f0cc18a9367
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 0.9865

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/game-hunters-coin-master-game-hack PDF link annotation
    • http://www.nfca.org.tw/upload/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/real-robux_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/tiktok-free-followers-mod-apk_GM835599320.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/how-pubg-uc-hack_GM1330123889.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-hacks-and-cheats_GM406889139.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_004_off00005054.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5054 25580 bytes
SHA-256: d7c3c9d19fe7656ca5e788379e008299d0432752a034be607464dbce3673a728
font_01_sfnt_off00008a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A03 17944 bytes
SHA-256: 00dcd97e74993abf534f5433ca519d6e7023ac06076bf7932408a344f37d0cba

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