Malicious PDF — malware analysis report

Static analysis result for SHA-256 adccfa60ffe26823…

MALICIOUS

PDF

43.6 KB Created: 2021-06-04 01:59:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4e8fd7c2fcf17c764878eaf43d35c176 SHA-1: 41a576a00150e9d5c7f964b7134570a4dfd6ea31 SHA-256: adccfa60ffe26823dfe91737e02689b66faa43d821114fb9bf5b6485b2157eb8
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. 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 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/479516143/how-to-get-minecraft-for-free-on-mobile-game-hack PDF link annotation
    • http://perpus.i2s-learning.com//repository/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://education.minecraftIn 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_off0000504f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504F 25200 bytes
SHA-256: 2b07cd7ac3a67e11dc3616100cdfc76c116242f646862a41738ab1e507d42d21
font_01_sfnt_off0000885a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885A 18104 bytes
SHA-256: 355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f

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