PDF malware analysis — malicious · 49b414143110ef97

MALICIOUS

PDF

45.7 KB Created: 2021-06-11 00:33:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: c0525620d4fa1be602fb199c9c375223 SHA-1: c3dbffb28da8ab5fb1f5c6c1e2491aa63703d988 SHA-256: 49b414143110ef976779b1afbe2bfeb6f6965a422a1a6248577052b79516bbd0

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, forming a link farm designed to attract users with promises of game cheats and free currency. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests the document is intended to redirect users to potentially harmful sites. No scripts were extracted, but the overall structure and embedded links point to a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/free-roblox-account-site-youtube.com-game-hack PDF link annotation
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/synapse-roblox-free_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/astuce-hack-robux_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/oginject-co_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
`stream_004_off00005227.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5227	27236 bytes
SHA-256: `9f943422388e0bc55f1b28d6862c1b9a8a52e6e6d5c6cfad446aa0b6e134d823`
`font_01_sfnt_off00008ec8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EC8	18800 bytes
SHA-256: `f1cc215f96561998deaee5da0cd982550d646bd4263e9c3394b530b56e640362`

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