PDF malware analysis — malicious · 47f1d2a52a844a8e

MALICIOUS

PDF

49.6 KB Created: 2021-06-09 03:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: d8308f887cec80136386c211da79f208 SHA-1: 8c03f586e222ec40aee4392d9ef85a1a34dad0f7 SHA-256: 47f1d2a52a844a8e05d0734ff2bfdf2af19d6348ae840a311570e2883bf5fce5

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically targeting users interested in game-related hacks and free currency. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a visual download button further supports the lure-based attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/www.roblox.com-games-for-free-game-hack In PDF document text
- http://stroyproekzia.ru/images/2021-free-robux-hack_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
- http://stroyproekzia.ru/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/how-much-is-uc-pubg_GM1330123889.pdfIn PDF document text
- http://stroyproekzia.ru/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://stroyproekzia.ru/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- http://stroyproekzia.ru/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
- http://stroyproekzia.ru/images/hacking-robux-for-money_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/coin-master-card-link-free_GM406889139.pdfIn PDF document text
- http://stroyproekzia.ru/images/minecraft-packs-free_GM479516143.pdfIn PDF document text
- http://stroyproekzia.ru/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- http://stroyproekzia.ru/images/robux-hack-me_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/roblox-passwort-hack_GM431946152.pdfIn PDF document text
- http://stroyproekzia.ru/images/cm-spin-link_GM406889139.pdfIn PDF document text
- http://stroyproekzia.ru/images/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000506b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x506B	27788 bytes
SHA-256: `96c3915e238ca6ca464bd847b359fcc31368abf04e513cb77e764b1159b12ffb`
`font_01_sfnt_off0000907e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x907E	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009d90.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D90	18864 bytes
SHA-256: `393bdd913fcf0db6bcd2c8a3c506a9cd785356a5b6d110da8c1bc4d0b6ee81c3`

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