Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf45b1e5c91b80ae…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 14:30:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 62c1960e5458e630334091b11563e357 SHA-1: 7ebdd86ca7ac4c1dbee31d3d846943110dfccc54 SHA-256: cf45b1e5c91b80ae22237995abe0e746f31798a60b96cdccb06ce77b727cd92c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF slugs, suggesting a link farm designed to attract users searching for game hacks and free currency. The presence of a direct link to 'coin-master-hack-spin-160-pro-game-hack' and other similar URLs indicates a likely attempt to redirect users to malicious sites or download potentially unwanted software. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.xyz/app/406889139/coin-master-hack-spin-160-pro-game-hack
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-ios_GM479516143.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/how-many-levels-are-there-in-coin-master_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/coin-master-hack-iphone_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-spin_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-roblox-accounts-that-work_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/como-hackear-coin-master_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/coin-master-game-hack_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-role-in-coin-master_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/coin-master-coin-hack_GM406889139.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdf
    • https://e-learning.manbangkalan.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a51.bin
7e215501555948098978993035b0036e6d1151156d454b59f67edd571c64bc3f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A51 24340 bytes
font_01_sfnt_off000081e6.bin
3c129696237f8a4998e60350049cab20723f357d88a2f9c142381212d91e6ef9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81E6 18492 bytes

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