PDF malware analysis — malicious · 869ea1c6ffb60691

MALICIOUS

PDF

44.6 KB Created: 2021-06-04 05:31:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d165c7296c2dc7fbdfd948183b80747c SHA-1: ab589f03a79c8180383e13d956fc0edf9828a6e5 SHA-256: 869ea1c6ffb60691cc764995bb63e2b0bb2fd204117445a00008aafb43f9970f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is a PDF that contains a deceptive call-to-action, instructing the user to press Win+R or paste a command into a terminal, consistent with ClickFix social engineering attacks. It also embeds external URIs pointing to potentially malicious files, such as 'https://netcdn.online/app/479516143/optifine-mcpe-game-hack'. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

ClickFix social engineering attack high SE_CLICKFIX

Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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.online/app/479516143/optifine-mcpe-game-hack
- http://digilib.uim.ac.id/repository/free-roblox-money_GM431946152.pdf
- http://digilib.uim.ac.id/repository/free-robux-scams_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdf
- http://www.digilib.uim.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdf
- http://digilib.uim.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/how-to-hack-coin-master-game_GM406889139.pdf
- http://www.digilib.uim.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/free-chest-coin-master_GM406889139.pdf
- http://www.digilib.uim.ac.id/repository/free-minecraft-addons_GM479516143.pdf
- http://digilib.uim.ac.id/repository/ways-to-get-free-robux_GM431946152.pdf
- http://digilib.uim.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
- http://digilib.uim.ac.id/repository/gain-robux_GM431946152.pdf
- http://digilib.uim.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdf
- http://digilib.uim.ac.id/repository/free-private-server-roblox_GM431946152.pdf
- http://digilib.uim.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
- http://www.digilib.uim.ac.id/repository/how-to-hack-minecraft_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005458.bin` `5d8dbe159da50b2a5a6068387af5e357f7ce811883136e928eb2cdbcccc0dc13`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5458	25620 bytes
`font_01_sfnt_off00008e4b.bin` `4dad5880ad3eacbbc69325eb8667ba1fdf9d8a9d84ebacaad4d0967bdcec7d7b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E4B	17516 bytes

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