PDF malware analysis — malicious · c70a08668271eb0d

MALICIOUS

PDF

41.3 KB Created: 2021-05-17 05:20:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: db35fb4977e1b48a0d2c95f7eb284a9a SHA-1: 75e0eaebeb40d219f31cd6f2339fcca368245dc4 SHA-256: c70a08668271eb0d662fee00a5d8090bac03a24a8d55761ced2a972d30cf64d1

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains numerous embedded URLs and a heuristic firing for 'SE_SECRET_RECOVERY_LURE', indicating it attempts to trick users into providing sensitive information or downloading further malware. The ML classifier also strongly flagged this PDF as malicious. The primary lure appears to be related to game cheats and currency for games like Coin Master and Roblox.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/406889139/coin-master-hacks-no-surveys-game-hack
- http://fishtech.is/images/get-free-robux-without-doing-anything_GM431946152.pdf
- http://fishtech.is/images/free-robux-games_GM431946152.pdf
- http://fishtech.is/images/robux-hacks-2021_GM431946152.pdf
- http://fishtech.is/images/free-shirt-roblox_GM431946152.pdf
- http://fishtech.is/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
- http://fishtech.is/images/coin-master-apk-hack-mod-download_GM406889139.pdf
- http://fishtech.is/images/robux-download_GM431946152.pdf
- http://fishtech.is/images/coin-master-free-spins-and-coins-app_GM406889139.pdf
- http://fishtech.is/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdf
- http://fishtech.is/images/free-coins-coin-master-blog_GM406889139.pdf
- http://fishtech.is/images/roblox-devil_GM431946152.pdf
- http://fishtech.is/images/free-robux-games-that-actually-work_GM431946152.pdf
- http://fishtech.is/images/free-coin-master-stuff_GM406889139.pdf
- http://fishtech.is/images/free-spins-for-coin-master-that-work_GM406889139.pdf
- http://fishtech.is/images/free-robux-com_GM431946152.pdf
- http://fishtech.is/images/get-more-free-spins-on-coin-master_GM406889139.pdf
- http://fishtech.is/images/coin-master-60-spins_GM406889139.pdf
- http://fishtech.is/images/free-spins-on-coin-master-game_GM406889139.pdf
- http://fishtech.is/images/free-spins-coin-master-october-17-2021_GM406889139.pdf
- http://fishtech.is/images/free-robux-giveaway_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004665.bin` `0fbebc729f6e005b89f2cba8094a95aa03427e0b28e064e48a2c1b369125e9b4`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4665	25776 bytes
`font_01_sfnt_off00007f56.bin` `55a2c5e1b7f94918972dbf36de35b773a73c2c126b1f6e018f905b5ffe646750`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F56	18148 bytes

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