PDF malware analysis — malicious · e3ccd67a79583bff

MALICIOUS

PDF

51.1 KB Created: 2021-06-09 15:32:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 8b3e446571b3f085ee518ec625d885d1 SHA-1: 66507e1a72b6b18c7a43f04d368c2216e3e1dc88 SHA-256: e3ccd67a79583bffc934f6d027e63c81c7cad2469e91dcfdae791dfbc1550dc8

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as PDF files and appear to be part of a link farm promoting game hacks and cheats. The presence of a ML classifier flagging the PDF as malicious, along with heuristics indicating a link farm and embedded URLs, strongly suggests a malicious intent to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to 'script-to-roblox-free-game-hack' and a URL that aligns with this theme.

Machine Learning

Nyx PDF Classifier malicious score 0.9713

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/script-to-roblox-free-game-hack PDF link annotation
- https://lesegais.ru/images/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
- https://lesegais.ru/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-hack_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/roblox-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/roblox-fly-cheat-code_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/pokemon-go-free-602_GM1094591345.pdfIn PDF document text
- https://lesegais.ru/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/roblox-hack-app_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-fedora-roblox_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/is-pokemon-go-free-on-ios_GM1094591345.pdfIn PDF document text
- https://lesegais.ru/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005027.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5027	26724 bytes
SHA-256: `b4573ac41d3d9e273f5af5c6bacfd458905e062340ffae699b62654dcec77feb`
`font_01_sfnt_off00008da0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DA0	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009785.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9785	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_03_sfnt_off0000a497.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA497	18348 bytes
SHA-256: `2061b0fab6f31db2d0509404978811c7751102c4ef6d48a5ea10eb467f2130c0`

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