PDF malware analysis — malicious · af29f5fd96dc0814

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 00:01:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: f18f17a67ea2aaa279afc483e882fad7 SHA-1: 91e37417cdee28b186f3f8e412cf5b1f84aa8f48 SHA-256: af29f5fd96dc0814e17bef873128f2aa0b16587b4b3c0b5aef396b2dadbe9671

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/robux-survey-game-hack PDF link annotation
- https://www.studio-dentistico-fiume.com/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/weird-roblox_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/www-coin-master_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/robux-com-free_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-robux-mobile_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000048b3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48B3	24460 bytes
SHA-256: `e6549901617212d05c15e672bcb857312c4d2a97a3863f064dbf666a60be6ac6`
`font_01_sfnt_off00008123.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8123	18144 bytes
SHA-256: `6fd5616ad4ce0c30eb6456aaab9f1a40378a031fa4650db50c22e26f1c4f3de9`

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