Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced9153bb0634868…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 08:14:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 275cfb62febb6d5cf0e0c7ab9d31faaf SHA-1: a2904f5f64cd03eb0a422682c03ec74fe5898ced SHA-256: ced9153bb06348689513ce6647966bbd7f5af7da9fee89ecbf4476bdaa16d7c0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, likely intended to redirect users to malicious sites offering game hacks or cheats. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further payloads or visiting compromised sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-latest-version-hack-game-hack
    • http://www.stttekstil.ac.id/elib/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/free-robux-mobile_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdf
    • http://www.stttekstil.ac.id/elib/repository/sites-to-get-free-robux_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-coin-master-android_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/get-free-robux-today_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-spins-for-today_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-to-get-robux_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • http://www.stttekstil.ac.id/elib/repository/coin-master-attack-block-hack_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/easy-way-to-get-free-robux_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/free-robux-just-click_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdf
    • http://www.stttekstil.ac.id/elib/repository/links-for-coin-master-free-spins_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-hacks-on-roblox_GM431946152.pdf
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/descargar-coin-master-hackeado_GM406889139.pdf
    • http://www.stttekstil.ac.id/elib/repository/hacker-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c8b.bin
4ec4f9fc2a619dfd3447592235e066540ac70e789d59b1ef0bfa566903250beb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C8B 24192 bytes
font_01_sfnt_off000083eb.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 2840 bytes
font_02_sfnt_off00008d9d.bin
e6a541bb9d0fa392ff7c4dd8c6fe04cfd1564a102b60f3b8f3e9956a20f70d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9D 17848 bytes

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