PDF malware analysis — malicious · aafc51a675f87d76

MALICIOUS

PDF

46.6 KB Created: 2021-06-11 11:11:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 17eee34bf0b742407617ae1d694588b6 SHA-1: 88de71a6a565d01fea68f9841590cfd5295c5e27 SHA-256: aafc51a675f87d763779286705a1e7c066ad09df75677e84a4dbcf406a18c5fc

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a visual download button, strongly suggesting a phishing or scam attempt. The primary URL redirects to a site offering 'free Robux', a common lure for credential harvesting or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9748

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/huskybux.com-free-robux-game-hack In PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/get-roblox-tickets-free_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-promo-codes-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-mod-menu-free-download_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/phantom-forces-roblox-rank-hack_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-shoutouts-roblox_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/getbucks-freecom-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000050ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x50AB	25036 bytes
SHA-256: `8ff9abb2897fe08fa6c20715a709db687074b376e6ceabe290f3c418c769f337`
`font_01_sfnt_off000087f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87F6	2984 bytes
SHA-256: `889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc`
`font_02_sfnt_off00009221.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9221	18688 bytes
SHA-256: `9c47c6972ac84d93a6e4947d9ffe5bb52cd13c94fc3c6e7246f14e3cc3dfb495`

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