PDF malware analysis — malicious · e4e309c6c4efe6d0

MALICIOUS

PDF

40.8 KB Created: 2021-05-13 15:11:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: aa2fc0148d30f39114919544dcd913a9 SHA-1: b797fcef87ee9b163ba841257a5169a553a22231 SHA-256: e4e309c6c4efe6d025532635439d2cd2914f630b8297818ecec04adab6d113d4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDF files with SEO-optimized titles related to game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a download button lure suggests a deceptive workflow. The primary IOCs are the URLs leading to these linked PDFs, which are likely part of a link farm designed to attract users with promises of in-game currency or cheats.

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/how-to-hack-m-coins-mcpe-master-game-hack
- http://yardfon.go.th/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdf
- http://yardfon.go.th/images/roblox-free-robux-com_GM431946152.pdf
- http://yardfon.go.th/images/free-spins-and-coins-com_GM406889139.pdf
- http://yardfon.go.th/images/roblox-com-free-robux_GM431946152.pdf
- http://yardfon.go.th/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
- http://yardfon.go.th/images/free-spin-online-tool-coin-master_GM406889139.pdf
- http://yardfon.go.th/images/free-coin-master-spins_GM406889139.pdf
- http://yardfon.go.th/images/minecraft-pocket-edition-mods-for-free_GM479516143.pdf
- http://yardfon.go.th/images/coin-master-hack-using-lucky-patcher_GM406889139.pdf
- http://yardfon.go.th/images/robux-online_GM431946152.pdf
- http://yardfon.go.th/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdf
- http://yardfon.go.th/images/coin-master-unlimited-spin-hack_GM406889139.pdf
- http://yardfon.go.th/images/how-to-hack-to-get-robux_GM431946152.pdf
- http://yardfon.go.th/images/free-robux-ad_GM431946152.pdf
- http://yardfon.go.th/images/free-roblox-accounts-with-robux-2021_GM431946152.pdf
- http://yardfon.go.th/images/how-do-you-get-robux_GM431946152.pdf
- http://yardfon.go.th/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
- http://yardfon.go.th/images/coin-master-download-hack-ios_GM406889139.pdf
- http://yardfon.go.th/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
- http://yardfon.go.th/images/coin-master-free-spins-link-2021-today_GM406889139.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_off00004632.bin` `e2f9753fd4674f38a0a46a5613f230f7408394f73aacb74e7f422dceba8f6fec`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4632	24204 bytes
`font_01_sfnt_off00007da1.bin` `b9a677f3ada20553b3a09ae09d1cc018ae00059cde0233d02195c796eebbdcfd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DA1	18056 bytes

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