PDF malware analysis — malicious · 32d7a53776a2424f

MALICIOUS

PDF

41.5 KB Created: 2021-05-16 16:36:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d770b3787d29cb3b4fa010f8323be2fc SHA-1: a1dbb7a7600b8c503448e86cf6269bcaa7271015 SHA-256: 32d7a53776a2424f760e6c4db3d401a7d809fa19cb0f8738a61f27ce097135ef

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized slugs pointing to game-related hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs suggests a link farm designed to redirect users to potentially malicious websites or download pages. No scripts were extracted, but the overall structure points to a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/blogger-coin-master-free-spins-game-hack
- http://huananhai.net/images/minecraft-free-ios-2021_GM479516143.pdf
- http://huananhai.net/images/adopt-me-roblox-hacks_GM431946152.pdf
- http://huananhai.net/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
- http://huananhai.net/images/can-i-get-free-robux_GM431946152.pdf
- http://huananhai.net/images/free-robux-codes-not-used_GM431946152.pdf
- http://huananhai.net/images/coin-master-gold-cards-free-link_GM406889139.pdf
- http://huananhai.net/images/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
- http://huananhai.net/images/coin-master-hack-ios-reddit_GM406889139.pdf
- http://huananhai.net/images/coin-master-daily-free-link_GM406889139.pdf
- http://huananhai.net/images/minecraft-free-play-now_GM479516143.pdf
- http://huananhai.net/images/coin-master-spin-link-free_GM406889139.pdf
- http://huananhai.net/images/free-magical-chest-coin-master_GM406889139.pdf
- http://huananhai.net/images/free-generator_GM431946152.pdf
- http://huananhai.net/images/robux-generator_GM431946152.pdf
- http://huananhai.net/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
- http://huananhai.net/images/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdf
- http://huananhai.net/images/does-coin-master-hack-work_GM406889139.pdf
- http://huananhai.net/images/free-ways-to-get-robux_GM431946152.pdf
- http://huananhai.net/images/coin-master-hack-no-survey-or-verification_GM406889139.pdf
- http://huananhai.net/images/free-robux-without-human-verification-real_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_off00004751.bin` `7ea6b58dec8725e9ed9943f2b0bd37387d56461865574504d7ac888fc1f8c590`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4751	24920 bytes
`font_01_sfnt_off00007f3f.bin` `0911799b9aa5b6ecf8f75e1ae71094da345a4ed5579c86b7800e8f9c3f9f610d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F3F	18464 bytes

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