PDF malware analysis — malicious · ab71c6f2689046db

MALICIOUS

PDF

32.6 KB Created: 2021-06-28 06:23:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ef7c1f6fe4f9cfb74e7c17dba7bf7153 SHA-1: b6cdc130759d189510bfb889ca59651f3b493d86 SHA-256: ab71c6f2689046db5b8d79afabe948f445913bcdcf7bfb61fc15fa8ce153b6a1

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which are SEO-optimized links pointing to sites offering game hacks and currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links designed to appear as legitimate resources. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to these external sites, likely to download further malware or engage in credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 3

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.
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-fly-hacks-2021-game-hack
- http://digilib.stie-yppi.ac.id/repository/coin-hackhub-coin-master_GM406889139.pdf
- http://digilib.stie-yppi.ac.id/repository/roblox-free-robux-no-human-verification-2021_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-on-samsung-tablet-2021_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/please-free-robux_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/free-robux-obby-made-by-stickmasterluke_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/roblox-how-to-get-in-bloxburg-for-free-2021_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/how-to-talk-to-roblox-if-you-get-hacked_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/free-robux-no-surveys-or-human-verify_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/worst-roblox-avatars_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/is-minecraft-java-free_GM479516143.pdf
- http://digilib.stie-yppi.ac.id/repository/hack-coin-master-game-apk_GM406889139.pdf
- http://digilib.stie-yppi.ac.id/repository/robux-free-2021_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/how-do-u-get-robux_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/free-robux-generator-2021_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdf
- http://digilib.stie-yppi.ac.id/repository/hackear-roblox-con-lucky-patcher_GM431946152.pdf
- http://digilib.stie-yppi.ac.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdf
- http://digilib.stie-yppi.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdf
- http://digilib.stie-yppi.ac.id/repository/free-tiktok-like_GM835599320.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000030fd.bin` `f88c56f644dfcca8673bdf8729581bf967cee79d986613046ee4d9fc2e1397ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30FD	22168 bytes
`font_01_sfnt_off00006233.bin` `7aded99351876bfbf75eb1d87c248127e746d40e41284b750c74c872edd45c20`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6233	19400 bytes

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