Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e7b045595c2bea1…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 18:31:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 68c5f42e89a84680cfe67e8f1e6e47a8 SHA-1: c1876625097da88b9db5718592a6777bcf2c644e SHA-256: 9e7b045595c2bea13837e3473fc6966b50c8896ef2de58334c8501b3578765c5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO link farms, suggesting a malicious intent to redirect users to potentially harmful content. The primary URL, 'https://netcdn.xyz/app/431946152/how-to-get-robux-game-hack', and the numerous links hosted on 'safeandsecurelocksmith.ca' indicate a lure for game-related cheats or currency. While no scripts were explicitly extracted, the PDF structure and the ML classifier's high confidence score support a malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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/431946152/how-to-get-robux-game-hack
    • http://safeandsecurelocksmith.ca/images/coin-master-facebook-free-spins_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/minecraft-windows-10-edition-hacks_GM479516143.pdf
    • http://safeandsecurelocksmith.ca/images/how-to-get-minecraft-java-free_GM479516143.pdf
    • http://safeandsecurelocksmith.ca/images/coin-master-free-spin-codes_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/instagram-coin-master-free-spins_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/free-spin-in-coin-master_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/1x1x1x1-roblox-id_GM431946152.pdf
    • http://safeandsecurelocksmith.ca/images/coin-master-32-mod-hack-unlimited_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://safeandsecurelocksmith.ca/images/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/free-robux-legit_GM431946152.pdf
    • http://safeandsecurelocksmith.ca/images/coin-master-hack-ios-without-verification_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/coin-master-free-spin-redeem-code_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/coin-master-daily-spin-free_GM406889139.pdf
    • http://safeandsecurelocksmith.ca/images/minecraft-hacks-pc_GM479516143.pdf
    • http://safeandsecurelocksmith.ca/images/get-robux-today_GM431946152.pdf
    • http://safeandsecurelocksmith.ca/images/free-roblox-characters_GM431946152.pdf
    • http://safeandsecurelocksmith.ca/images/roblox-robux-hack-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047dd.bin
bf9a2309de194468407b10b5e0fb3704ec54bb19273d2c2981eda010c3c34058
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DD 25288 bytes
font_01_sfnt_off00008228.bin
608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8228 3608 bytes
font_02_sfnt_off00008eb0.bin
71e563e9f7d932bf2f31e6be0f9830cdc433fd691743cf56878add14cefe6216
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB0 18120 bytes