PDF malware analysis — malicious · 48e6122aa2d5d6da

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 18:46:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 8c6a6fdfb8e0ef25d684fc9ecf6f4c29 SHA-1: ff4a520490965b499207a8b85d7f1b3b7e487c12 SHA-256: 48e6122aa2d5d6da036b08d16b56475df7c88a9d99eeea28d3f2cf152c0183f0

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a clipboard-command (paste-and-run) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9621

Heuristics 5

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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/479516143/minecraft-windows-10-free-code-game-hack PDF link annotation
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/whats-robux_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/simplysarc_GM479516143.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.ventureit.com.sg/uploaded_files/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://sigmaclient.info#2In PDF document text
- https://flux.today#3In 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_003_off00004b2b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B2B	24000 bytes
SHA-256: `62b856e88301a85a1ca3ca45eef451c1f99724a1cf49580ebea31d7c1371267a`
`font_01_sfnt_off00008224.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8224	3092 bytes
SHA-256: `3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0`
`font_02_sfnt_off00008ccf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CCF	18524 bytes
SHA-256: `61f4e129dbb086a6f9797ef369c55cdd3b58d633037fca8f4f59eaf5785788a4`

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