Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e567c639abbcacf…

MALICIOUS

PDF

45.2 KB Created: 2021-05-19 15:54:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c6f54fbe5c3229d31d0a6c488bc2289d SHA-1: 1fccd919f89c4b3c18a1fea1acd5d9d851a24f08 SHA-256: 8e567c639abbcacfee53f8dca7cfd11408a45686e6e191e667693a005bdcc16a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are structured as SEO-optimized PDF gateways pointing to game hack and cheat content. The primary URL, https://netcdn.xyz/app/406889139/coin-master-hack-no-human-verification-game-hack, suggests a lure for game-related exploits. While no scripts were explicitly extracted, the PDF structure and embedded link farm indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-no-human-verification-game-hack PDF link annotation
    • http://pia2000.net/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/robux-only_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/are-pubg-uc-available_GM1330123889.pdfIn PDF document text
    • http://pia2000.net/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-spins-2021_GM406889139.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_off000048ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48CE 26124 bytes
SHA-256: 1605b9aef5c3cf8c4f245a91b37c7699b908953b1b3ae04de564bda51f1e7c86
font_01_sfnt_off00008261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8261 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off00008e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4A 18248 bytes
SHA-256: b53d611e96a32094425b068729023046bb1db9f19d10500fe1599e8fd30759af

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