PDF malware analysis — malicious · 8bbb0162fcd695cd

MALICIOUS

PDF

49.8 KB Created: 2021-06-09 00:11:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 782294a0098b09d1bdd94939b8b2c865 SHA-1: 21b690ef3a7b61c1e8e969db6b56bb17df3a555a SHA-256: 8bbb0162fcd695cd0a917cc3dd000543b362bbfecb1a7bdf359d26ed9661c800

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document employs a social engineering lure promising free Robux to trick users into clicking malicious links. The presence of embedded URLs and a heuristic indicating a browser installation lure strongly suggests the document's intent is to redirect users to sites that facilitate malware installation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 4

Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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-created-by-jess-the-gamer-girl-game-hack PDF link annotation
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/rewardex-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/master-coins-free_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/www-rbxhut-com_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-do-you-earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-download-roblox-on-computer-hack-tool_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-hack-spin_GM406889139.pdfIn PDF document text
- https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-free-spins-hack-link_GM406889139.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_off00005280.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5280	27304 bytes
SHA-256: `115bab20094b7fb06c00564ef2581d91b401f87a1d2e5db3d1384862bf7387ed`
`font_01_sfnt_off000092a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92A1	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009c8c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C8C	19488 bytes
SHA-256: `b965468e48a0a3b87f4508d66e2d3c89e6b39c32aa59e1c9292a75b64559aad8`

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