Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad01fbb03141e90…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 08:25:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d7fff80b16b9ac5af2d70bdebd45c643 SHA-1: cd3a53dcf1c4f97fbd481f7a13843e37318e835e SHA-256: cad01fbb03141e9010ba8b6aef05cf95d6a9417c51734e2774a448c6d67c196b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack redirector, specifically targeting users interested in 'Coin Master'. The embedded URL, https://netcdn.online/app/406889139/coin-master-free-cards-link-game-hack, is presented as a lure for free game resources. While no scripts were extracted, the PDF structure and embedded URI strongly suggest a social engineering attack to drive users to a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-free-cards-link-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-free-download-online_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/pokemon-go-free-pokemon-hack_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/pubg-uc-hack_GM1330123889.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EA 27868 bytes
SHA-256: 4e55905f725f46ed93ffc0fb3b9fad748f1c2e2bf0c0f2a0c9ae85815185a69f
font_01_sfnt_off00009054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9054 18056 bytes
SHA-256: 4c00fba11e6222d30ce91962ad0846eff86227a46da4e4704094e367f0981575

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