PDF malware analysis — malicious · a772ac2a22b5ffb4

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 06:12:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 3027465c9e7cd81b124565ecc491886a SHA-1: 4b4def3999c948fc3c89ddb297a01f32a5d80798 SHA-256: a772ac2a22b5ffb420bba744583025341954d535143cdbc495ecd670e895bd4f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous links to external websites and other PDFs, many of which are related to game hacks and cheats. The ML classifier and the PDF link farm heuristic strongly indicate malicious intent. The document body and extracted URLs suggest a lure for downloading potentially unwanted or malicious applications disguised as game cheats.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-game-hack-app-game-hack PDF link annotation
- https://vierabyragazze.com/upload/files/free-robux-just-enter-username-no-verification_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/robux-fun-hack_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-admin-hack-s_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/synapse-hack-download-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/download-roblox-clothes-free_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-hack-no-human-verification-and-no-survey-2021_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-links-for-free-spins-2021_GM406889139.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
`font_00_sfnt_off00003230.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3230	23036 bytes
SHA-256: `97f5e5dacb5824a77e4faa62879546e1d7365bbcf4cfb8df3e17c3a3df9b4998`
`font_01_sfnt_off000065e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65E2	18440 bytes
SHA-256: `571ab4b458d0dac508f9535f575fba5b7e94d60ff2bdf8022b00b4ca59ab09de`

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