PDF malware analysis — malicious · d464f4b4762cabed

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 08:22:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: d3d321a81db691cb8eb2bec1668d8590 SHA-1: a71e8f5553a38a837c45ece9b7a4c9dfa3124169 SHA-256: d464f4b4762cabed214d8f7ae0b0f8490e4c4632d37a1b96b46fff54ece84fb6

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to IP addresses, that lead to files related to game cheats and in-game currency. The ML classifier strongly indicated maliciousness, and the presence of these links suggests a lure to download potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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/406889139/hack-coin-master-net-game-hack PDF link annotation
- http://110.164.163.187/ckfinder/userfiles/files/how-to-get-free-elite-on-roblox-murder-mystery-2_GM431946152.pdfPDF link annotation
- http://110.164.163.187/ckfinder/userfiles/files/cheat-engine-patched-roblox_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/how-to-get-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/roblox-cheat-engine-downlaod_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/roblox-hack-siteleri_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/robux-miner_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/how-to-buy-free-gamepass-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/hack-system-for-roblox_GM431946152.pdfIn PDF document text
- http://110.164.163.187/ckfinder/userfiles/files/does-roblox-hacks-your-bank-account_GM431946152.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_002_off000032ee.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32EE	23176 bytes
SHA-256: `7995e4cca6788c3fa61b11c6a13f0d465fc46003cf8011531cc68ed475fb58ac`
`font_01_sfnt_off00006715.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6715	18004 bytes
SHA-256: `efc0f880232c3645a95ee9e9918142e3aa582be2756186f38de7b18c44f53459`

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