PDF malware analysis — malicious · 4a12ab1d57904d2a

MALICIOUS

PDF

35.9 KB Created: 2021-07-06 07:13:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 4005720eb140fe67a03cb4e61df1061d SHA-1: fd1aa732b15110d04470992c9e26dee991f875ba SHA-256: 4a12ab1d57904d2a0a87575fdbfc179a2fc08443a6d46ae6a1293658a94f4a2b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links and a prominent call-to-action, strongly suggesting a phishing or scam attempt to lure users to external sites. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs indicate a focus on offering 'free Robux' or similar in-game items, a common lure for credential harvesting or malware distribution.

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/431946152/free-robux-without-doing-anything-game-hack
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-easy_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-spins-for-coin-master_GM406889139.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-no-human-verification-2021-android_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-v3rmillion-site-v3rmillionnet_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-clothing-on-roblox_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-gear-codes-for-roblox_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-safe_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/minecraft-server-free-trial_GM479516143.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/roblox-gta-5-hack_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack_GM406889139.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/roblox-lumber-tycoon-2-teleport-hack_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/why-tiktok-free-view-bot_GM835599320.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-coin-master-spin-app_GM406889139.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-now-today_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/play-roblox-for-free-on-google_GM431946152.pdf
- https://www.virajafashionista.com/uploaded_files/userfiles/files/free-roblox-code-giveaways_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000032ad.bin` `44c4cd28cacaa894acf6905e93440d4e7316169c1d2beecdd270ad0537c12e41`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32AD	22760 bytes
`font_01_sfnt_off000065ba.bin` `175c8a58e8e169f12273aafb2eda495858213246dee116a0d68e3e1da0577e93`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65BA	19652 bytes

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