Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6920abb72f36b9…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 06:51:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8cab9e52052f7503c9405b45828fbc42 SHA-1: 4844362ffab83b8c2222f4009105b75060af16f7 SHA-256: 7f6920abb72f36b9e59b7f2eca898a7dfdc5afe244134c389197f048bb8f07d0
102 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, employing a 'download button' heuristic and a large number of external links, many of which are SEO-optimized PDF files. The primary URL, https://netcdn.online/app/431946152/roblox-money-hack-game-hack, suggests a theme of game-related exploits or scams. The extensive link farm indicates an attempt to manipulate search results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/roblox-money-hack-game-hack
    • http://rollipolli.hu/userfiles/files/minecraft-free-download-android-apk-014-0_GM479516143.pdf
    • http://rollipolli.hu/userfiles/files/coin-master-free-daily-spins_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdf
    • http://rollipolli.hu/userfiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://rollipolli.hu/userfiles/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdf
    • http://rollipolli.hu/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/pokemon-go-free-and-inter-egg-sting-development_GM1094591345.pdf
    • http://rollipolli.hu/userfiles/files/free-spin-coin-master-twitter_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://rollipolli.hu/userfiles/files/funbloxxyz-free-robux_GM431946152.pdf
    • http://rollipolli.hu/userfiles/files/coin-master-free-coins-2021_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/minecraft-switch-free_GM479516143.pdf
    • http://rollipolli.hu/userfiles/files/coin-master-free-spin-link-list_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://rollipolli.hu/userfiles/files/free-800-robux_GM431946152.pdf
    • http://rollipolli.hu/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fe2.bin
ec8f59c6ccf32738ab9686384d75c87a1b30bc85f1123e0737a16ab63cc14245
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE2 26824 bytes
font_01_sfnt_off00008d4f.bin
eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4F 2940 bytes
font_02_sfnt_off0000975f.bin
2877ec179c3d1975899223932944ba0d35aae080e47210864d1f1454656c8d43
pdf-font-stream PDF embedded font (sfnt) at offset 0x975F 18560 bytes