PDF malware analysis — malicious · 457fe87622bb0e67

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 09:51:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 74e4da0486448b645012a1657cbb1f4f SHA-1: 7438a9df58cce0b06d89c77c314d035dd023ef99 SHA-256: 457fe87622bb0e674c7cd08f4c4820c9bd338a2e183f890b2cd1fb653330a3e8

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 appear to be SEO spam related to games and hacks. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' lure suggests an attempt to trick users into navigating to these potentially harmful URLs. The primary IOCs are the external URLs found within the document.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/http-coin-master-hack-club-game-hack PDF link annotation
- https://www.alarqam.ae/userfiles/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/games-like-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-coin-master-s_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-free-coins-and-spins-app_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_off000050b9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50B9	24628 bytes
SHA-256: `ed147d25599cfa4769b3501cd983d9077de02eb672ea013a45f5fa602c7154e8`
`font_01_sfnt_off000088a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88A8	18264 bytes
SHA-256: `96dcf9cab8c9fb238960f977a2b624e306cfdaf9711145744c5654b062c5866a`

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