PDF malware analysis — malicious · 38fe41b236b31522

MALICIOUS

PDF

47.4 KB Created: 2021-05-11 17:14:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 499ce1d929f65fdee3ea7ed4e5002e78 SHA-1: 96086de298b38d2d159ebee0dc4c8d450dbfaf60 SHA-256: 38fe41b236b3152217fb17f09270a84978eef0020c0fc5da4cf31e42049eab99

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized slugs pointing to game-related cheats and hacks. The document body and extracted URLs suggest a lure to download potentially malicious content or visit scam websites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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/hacking-apps-for-roblox-game-hack
- http://reisebild.eu/images/free-coin-master-spins-2021_GM406889139.pdf
- http://reisebild.eu/images/best-way-to-get-free-robux_GM431946152.pdf
- http://reisebild.eu/images/how-to-make-free-robux_GM431946152.pdf
- http://reisebild.eu/images/coin-master-hack-software-download_GM406889139.pdf
- http://reisebild.eu/images/can-i-get-robux-for-free_GM431946152.pdf
- http://reisebild.eu/images/free-spins-coin-master-app_GM406889139.pdf
- http://reisebild.eu/images/free-robux-please_GM431946152.pdf
- http://reisebild.eu/images/minecraft-gun-games-free_GM479516143.pdf
- http://reisebild.eu/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
- http://reisebild.eu/images/coin-master-free-spins-and-coins_GM406889139.pdf
- http://reisebild.eu/images/minecraft-for-ipad-free_GM479516143.pdf
- http://reisebild.eu/images/blogspot-coin-master-free-spins_GM406889139.pdf
- http://reisebild.eu/images/coin-master-free-spins-bit-ly_GM406889139.pdf
- http://reisebild.eu/images/free-spin-and-coin-blogspot_GM406889139.pdf
- http://reisebild.eu/images/free-spins-on-coin-master-game_GM406889139.pdf
- http://reisebild.eu/images/coin-master-hack-tool-pc-download_GM406889139.pdf
- http://reisebild.eu/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
- http://reisebild.eu/images/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdf
- http://reisebild.eu/images/is-coin-master-hack-safe_GM406889139.pdf
- http://reisebild.eu/images/minecraft-bedrock-hacks_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004893.bin` `3a70bb9e07b9215bda71d70ad4cd82ce67c565daa7b7b0b962ecabf49292b672`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4893	25444 bytes
`font_01_sfnt_off00008372.bin` `f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8372	7272 bytes
`font_02_sfnt_off000094e3.bin` `a12a900017875743d46ad83be25c63e25fa00e3014bd6d438c4b8f248ab77b0b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94E3	18932 bytes

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