Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85694f1e4dadc07…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 15:19:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 58c1b78e00848bb88925d788b522816d SHA-1: 6810e955c999baab53df2668f58efbffcdb7e083 SHA-256: a85694f1e4dadc077d4a4148599ea9a45801532a7a0230b4d384b66eac308e87
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 related to hacking games like Roblox and Coin Master. The presence of a PDF link farm heuristic and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the document's structure and content strongly suggest it's designed to redirect users to potentially malicious sites for illicit purposes.

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/how-to-hack-linkmon99-on-roblox-game-hack PDF link annotation
    • http://safetin.ru/images/como-hackear-todos-los-juegos-de-roblox_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/pastebin-robux-hack-911_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/how-to-make-t-shirts-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/roblox-breaking-point-hacks_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/free-tokens-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://safetin.ru/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://safetin.ru/images/roblox-call-of-robloxia-5-hack_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/robux-hack-2021-creado-por-hackdejuegosapk-roblox-tm_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://safetin.ru/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/roblox-hack-codes_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_off00002e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4D 22448 bytes
SHA-256: 7015930aba51ac5ba7a33631e446450611aac8316e377bdb3f3746286181e5f6
font_01_sfnt_off00006036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6036 19364 bytes
SHA-256: a3f299bd20fb41cc9adc8039283fcb45820da84015c76bb26fa9c32129b7ddd6