PDF malware analysis — malicious · eca22fce394d53dc

MALICIOUS

PDF

34.2 KB Created: 2021-06-17 17:27:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 1f545f0a1c5cb3e31d5bc68570496ccf SHA-1: 30c0043e3f902d2c0883909d97aaf76f22e85832 SHA-256: eca22fce394d53dc361a2999c386c21322aa53f05cae4fe9ad0faf88c5a0bcf8

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to pages offering game hacks and free in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly flagged the document as malicious. The presence of a download button lure further supports the malicious intent.

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/speed-city-hacks-roblox-game-hack
- https://lib.btkljogja.or.id/repository/descargar-hack-pc-robux_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/free-robux-no-downloading-apps_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdf
- https://lib.btkljogja.or.id/repository/how-to-hack-in-roblox-phantom-forces_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/10-weird-scary-hacker-storys-roblox_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/free-coins-on-coin-master_GM406889139.pdf
- https://lib.btkljogja.or.id/repository/how-to-get-5-million-free-robux_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/is-minecraft-free-on-pc_GM479516143.pdf
- https://lib.btkljogja.or.id/repository/apps-to-get-free-robux_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/free-robux-offers_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/aves-magic-academy-hack-roblox_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/how-dto-get-free-robux_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/getbucks-com-free-robux_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/how-to-get-robux-free-pastebin_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/free-radio-roblox_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/free-robux-codes-no-human-verification-2021_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/coin-master-free-spins-5-10-2021_GM406889139.pdf
- https://lib.btkljogja.or.id/repository/free-minecraft-alts_GM479516143.pdf
- https://lib.btkljogja.or.id/repository/free-robux-cia_GM431946152.pdf
- https://lib.btkljogja.or.id/repository/completed-coin-master-hack_GM406889139.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_off00002efd.bin` `697998a2bbf02566fd30b13c2ce2885f5af007443db7fa54656ab18f810a2c1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EFD	22084 bytes
`font_01_sfnt_off00005fc9.bin` `765dc0a74caa13510ac7bac6c8d2793e0252a466c9e32215c4d09e9caf49e272`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FC9	19224 bytes

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