Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5cf84c39c507f5e…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 05:45:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ef6ff330295232be3de4b0738d6a4c55 SHA-1: 215c088bb8c0738c8a086d60632e883743da86bf SHA-256: c5cf84c39c507f5eda1a31ac4f38343d6ba613063cba6db94399f765c33d6520
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lead to game hack lures, specifically targeting popular mobile games. The primary URL, https://netcdn.online/app/406889139/coin-master-free-spin-and-coins-fbid-links-game-hack, is designed to trick users into clicking through to a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a phishing or social engineering attack aimed at driving traffic to exploit or scam pages.

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-free-spin-and-coins-fbid-links-game-hack PDF link annotation
    • http://opac.library.uib.ac.id//repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C7 25376 bytes
SHA-256: 4d915bffd7debfdb2853d07155cc0fdb3f662e9d94f514f6b8073620077f595b
font_01_sfnt_off00008a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A74 2920 bytes
SHA-256: 7866b010ce87c03010c9e9b3012247344950352db6dfa85c109f2de8769dafe0
font_02_sfnt_off0000948e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x948E 18388 bytes
SHA-256: 3cac3a67a18aefc9018cab5069c316f318df6e005a7bd0b6256086240f829048

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