PDF malware analysis — malicious · 3ac0f45bde593ff8

MALICIOUS

PDF

44.4 KB Created: 2021-06-09 02:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: e4792ed4dc57ece10a975fbd5f054959 SHA-1: 55d6485a0aa1b133a05232b4022d7991dc4f93f0 SHA-256: 3ac0f45bde593ff86bf3843df017c52b2e2c2c208f2b145b04cadc719442a345

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, suggesting it is designed to redirect users to external sites for downloading content. The document body explicitly mentions 'Free Robux' and game hacks, aligning with a phishing or scam lure. While no scripts were directly extracted, the PDF structure and heuristic firings indicate malicious intent to lead users to potentially harmful downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9890

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.tw/app/431946152/free-robux-no-gift-card-game-hack
- http://gaeconsultores.cl/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
- http://gaeconsultores.cl/images/minecraft-pe-free_GM479516143.pdf
- http://gaeconsultores.cl/images/coin-master-pet-food-free_GM406889139.pdf
- http://gaeconsultores.cl/images/how-to-hack-coin-master-android_GM406889139.pdf
- http://gaeconsultores.cl/images/haktuts-coin-master-free-daily-spins_GM406889139.pdf
- http://gaeconsultores.cl/images/roblox-car-crushers-2-hack_GM431946152.pdf
- http://gaeconsultores.cl/images/pokemon-go-free-kanto-ticket_GM1094591345.pdf
- http://gaeconsultores.cl/images/coin-master-free-spins-no-human-verification_GM406889139.pdf
- http://gaeconsultores.cl/images/see-through-walls-roblox-hack_GM431946152.pdf
- http://gaeconsultores.cl/images/free-coins-2021-coin-master-link_GM406889139.pdf
- http://gaeconsultores.cl/images/coin-master-stop-attack-hack_GM406889139.pdf
- http://gaeconsultores.cl/images/free-coins-coin-master-link-2021_GM406889139.pdf
- http://gaeconsultores.cl/images/free-robux-no-verification-2021_GM431946152.pdf
- http://gaeconsultores.cl/images/free-minecraft-worlds_GM479516143.pdf
- http://gaeconsultores.cl/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
- http://gaeconsultores.cl/images/apps-to-get-free-robux_GM431946152.pdf
- http://gaeconsultores.cl/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdf
- http://gaeconsultores.cl/images/minecraft-free-download-laptop_GM479516143.pdf
- http://gaeconsultores.cl/images/free-daily-spins-coin-master-2021_GM406889139.pdf
- http://gaeconsultores.cl/images/how-to-get-100-robux-for-free_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000504b.bin` `df5efc838192fba64b08ca6b4deede270d640f59089e03cca3c31dcda6d6243f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x504B	25376 bytes
`font_01_sfnt_off000089b0.bin` `5e2a3e67d4e6faa48e47b93c69738121aad1fd6f7e815cfd3538255806571323`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89B0	18640 bytes

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