Malicious PDF — malware analysis report

Static analysis result for SHA-256 8da04fd7592bd790…

MALICIOUS

PDF

32.0 KB Created: 2021-05-15 17:42:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 407ab5f709a03edf9b02e1fa4dac8886 SHA-1: 28b2afd8c179e4669f5e3e3a8d9da74e5d8f265f SHA-256: 8da04fd7592bd79044c2a745c75aa7d5475a5459e5621402bffa2d99a3103de2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links that redirect to websites offering hacks and free items for games. The heuristic firings indicate that the PDF links to known malicious redirector infrastructure and is part of a link farm designed to attract traffic. The primary IOC is the redirector URL, which likely serves as the initial point of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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-3.5-2-hack-game-hack In PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coinmaster_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b55.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B55 24804 bytes
SHA-256: 82ace1ce1a492017924b0a7bb400294ab3a1937f28b43ce16769c528be663e78