PDF malware analysis — malicious · 4b7f53d6d42a597d

MALICIOUS

PDF

45.5 KB Created: 2021-06-13 17:30:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 971ff09790ef8140ecf629f752684d50 SHA-1: 93d0141e387b45afd8c703b541fa008c1411c729 SHA-256: 4b7f53d6d42a597d8eb39fc52437ad223f42bd46d0a3fe41b4f3a9c928268b1d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external PDF files, many of which appear to be SEO-optimized lures for game-related cheats or hacks. The presence of a download button lure and a direct link to an executable file suggests an attempt to trick the user into downloading malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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-jailbreak-geld-hack-game-hack
- https://fib.ub.ac.id/sac/repository/collect-free-spins-for-coin-master_GM406889139.pdf
- https://fib.ub.ac.id/sac/repository/pubg-uc-price-in-india_GM1330123889.pdf
- https://fib.ub.ac.id/sac//repository/coin-master-hacks-for-spins_GM406889139.pdf
- https://fib.ub.ac.id/sac//repository/free-robux-ad_GM431946152.pdf
- https://fib.ub.ac.id/sac/repository/free-robux-no-verification-no-download_GM431946152.pdf
- https://fib.ub.ac.id/sac//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
- https://fib.ub.ac.id/sac/repository/does-coin-master-hack-work_GM406889139.pdf
- https://fib.ub.ac.id/sac//repository/coinmasterfreespinlink_GM406889139.pdf
- https://fib.ub.ac.id/sac/repository/coin-master-free-spins-2-5-2021_GM406889139.pdf
- https://fib.ub.ac.id/sac/repository/free-2021-robux_GM431946152.pdf
- https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-without-surveys_GM431946152.pdf
- https://fib.ub.ac.id/sac//repository/how-to-get-free-robux-on-ipad_GM431946152.pdf
- https://fib.ub.ac.id/sac/repository/roblox-royale-high-diamond-hack_GM431946152.pdf
- https://fib.ub.ac.id/sac/repository/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdf
- https://fib.ub.ac.id/sac//repository/coin-master-hack-2021-no-human-verification_GM406889139.pdf
- https://fib.ub.ac.id/sac//repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
- https://fib.ub.ac.id/sac/repository/pokemon-go-free-coins-no-verification_GM1094591345.pdf
- https://fib.ub.ac.id/sac//repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdf
- https://fib.ub.ac.id/sac//repository/good-free-minecraft-server-hosting_GM479516143.pdf
- https://fib.ub.ac.id/sac//repository/free-robux-youtube_GM431946152.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_off00005400.bin` `202a316aeae97f24d0f91b14aaa7ae82b9f67802b41e7577adfa555343876c71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5400	25200 bytes
`font_01_sfnt_off00008e35.bin` `821d0256454e531624cc9bfc216dd426aa71f6735af49c775eec7e37925158c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E35	18640 bytes

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