Malicious PDF — malware analysis report

Static analysis result for SHA-256 5babb2aa6ca1621b…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 08:15:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 519cf8504a00c5e79edffbfd3a592fbd SHA-1: 978d9a0ba3e36137128bab2978e5a7d430d69245 SHA-256: 5babb2aa6ca1621b992da31a7d9d250a1229ba9a5408128d86d634097d79d293
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game hacks and downloads, suggesting a lure for users to download potentially unwanted or malicious software. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button heuristic further supports this. The primary IOC is the direct URL to a supposed Roblox download.

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/roblox-free-download-computer-game-hack
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox-adopt-me_GM431946152.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-pastebin-2021_GM431946152.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-free-download_GM479516143.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/new-free-spins-coin-master_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-apk-download-free-11-055_GM479516143.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-fake_GM431946152.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-twitter_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/minecraft-java-edition-download-free_GM479516143.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-spin-and-coin-blogspot-com_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/free-promo-codes-for-robux_GM431946152.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/coin-master-hack-fast-org_GM406889139.pdf
    • https://e-learning.man2garut.sch.id/__statics/gudangsoal/files/who-to-get-free-shadow-item-pack-free-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c0.bin
32e0604780d521b75ffe3900ab15c0d32aaee5c5ae9424392685aa1262848dae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C0 22892 bytes
font_01_sfnt_off00006574.bin
d3ca48b16f58e8f3fa725c9fee31ebdedaca84116b9185ade3df25440fbd6ab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6574 19836 bytes

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