Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aeb0e2916b04757…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 08:59:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0f3082f63b31e5d612429d2b43f8fef9 SHA-1: 3fb2b7d67bd08ed063a916cf048116a37786f1e9 SHA-256: 7aeb0e2916b04757a3060b193e70e63e121e8245eca5aa7fe5f7cf307206e8ed
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game cheats and currency generators, indicating a link farm designed to attract users. The presence of a "CLICK HERE TO ACCESS ROBUX GENERATOR" call-to-action further supports the lure of a malicious download or scam. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/best-free-shirts-on-roblox-game-hack PDF link annotation
    • http://paro.net.ua/images/roblox-free-h-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-free-name-change-hack_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-hints-and-cheats_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-robux-hack-generator-2021_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-for-kids-age-9_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/cool-items-roblox-free-and-how-to-get-them_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/best-free-exploit-roblox-pain-exist_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-roblox-accounts-with-no-pin_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/roblox-free-pants-solid-color_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/free-game-card-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn 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
font_00_sfnt_off00002c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6C 22716 bytes
SHA-256: a8c874115b8c66eec336d95422785bd11f7a2a4447d10b2bf2d3538d4e41068e
font_01_sfnt_off00005efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFD 19040 bytes
SHA-256: 54d7d173e605b8a00a798669c215e38d8ace179fd067e03943fdb2f144f87206

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