Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcafab3136e381c3…

MALICIOUS

PDF

52.1 KB Created: 2021-05-19 10:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 02c4d5d4fb8bd39547578e371717cc8b SHA-1: c84accd67e55d99a3c9a11a6c0c0e9111e895771 SHA-256: bcafab3136e381c31ce95c128a15c6035a2f021007cfafc04e8141fee6f3ce67
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, suggesting it is designed to redirect users to external sites for potentially malicious downloads or scams. The ML classifier strongly indicated maliciousness, and the presence of external links related to game hacks and cheats points to a social engineering lure. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

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/robux-com-free-game-hack
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/tiktok-free-liker_GM835599320.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/hack-master-coin_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-coin-master-coins-2021_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-32-hack-apk-download_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/pokemon-go-free-and-verizon_GM1094591345.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/today-free-spin-coin-master_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spin-in-coin-master_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-attack-hack_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-pro-hack_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-coin-master-spins-2021_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-minecraft-mods-for-ps4_GM479516143.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/cmaster-club-coin-master-hack_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spin-daily-bonus_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d76.bin
4653d64d9414557aa4d26ababbe0761512926912343eaa577c094f9d5c7d86e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D76 38316 bytes
font_01_sfnt_off00009fe6.bin
eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE6 2940 bytes
font_02_sfnt_off0000a9f6.bin
15a0db03ecad41b32ad15729058012b5ee1d917146ec7af3e780186d41394abc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9F6 18276 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.