Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7e6e7f88581d50…

MALICIOUS

PDF

46.4 KB Created: 2021-05-15 17:17:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a5b9534c9adfddade5d04f70cd13c73d SHA-1: ebb8aaaab24592f36bbc0312a359f9bbf6f53bff SHA-256: ce7e6e7f88581d50a9a8b595f35c0a50117de816ae578eecba2c64ceee4cd7a2
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-optimized PDF download links for game-related cheats and free items. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links suggests a link farm or redirection to malicious content. The document body, though partially corrupted, contains a URL related to "free Robux", reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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-free-robux-easy-on-phone-game-hack PDF link annotation
    • http://pourvosvacances.com/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/is-roblox-free-on-pc_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
stream_003_off00004c06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C06 28744 bytes
SHA-256: 10c3e22f30eb09419a5b03c39f4843f53364ac1ce1c78a6a7ed242132ffcad7d
font_01_sfnt_off0000911d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x911D 19008 bytes
SHA-256: e6e3347b6ae704c87521381cf50d1046861d1e5efe3155f159bfcc6a29e599dd

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