Malicious PDF — malware analysis report

Static analysis result for SHA-256 323162810fa38fa6…

MALICIOUS

PDF

45.6 KB Created: 2021-05-13 00:41:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 48a02e34aff4dfe30cd4c30b221ff24d SHA-1: 791e97c72f51a08d3aaead73965ea6ba539848f9 SHA-256: 323162810fa38fa672b0cdef105dab7a74edf88f48dfee6ba66bf4aeb0456892
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to known malicious redirector infrastructure, disguised as a 'Coin Master Hack Download'. The document body and heuristics indicate a lure for game-related cheats or hacks. The primary malicious link is https://netcdn.xyz/app/406889139/coin-master-hack-download-ios-game-hack, which likely leads to a further download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.xyz/app/406889139/coin-master-hack-download-ios-game-hack In PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-2021_GM431946152.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_003_off00004ba5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA5 25572 bytes
SHA-256: 073652d9cd2ba652f333e41943a06905ee24bf5e24fdab4f5e8cc7c99f570a87
font_01_sfnt_off0000860c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860C 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBE 18296 bytes
SHA-256: eb74dfbf061b28f56530c4f3611099698c9338eeb1cc06642e5044c6dd5fa24e

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