PDF malware analysis — malicious · 1d207179ce035282

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 06:00:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 4558a05dfe926aafd048a7d4330c0e06 SHA-1: b3d5579ee4483564fd57bfa75fac87aa96051439 SHA-256: 1d207179ce035282f0c4100153772b09fc77eb27ed03b106dbe939cb3ef651f3

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified as a link farm, likely intended to direct users to malicious websites. The document body mentions 'Free Items On Roblox 2021 Catalog' and related game terms, suggesting a lure for users seeking in-game advantages. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link distribution attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-items-on-roblox-2021-catalog-game-hack PDF link annotation
- http://www.natconveyors.com/uploaded_files/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-admin-commands-roblox-download_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/roblox-rewards-site_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://www.natconveyors.com/uploaded_files/userfiles/files/how-do-i-get-free-robux_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
`font_00_sfnt_off00003279.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3279	22216 bytes
SHA-256: `390536063966db891fb863f6c82cceeab0609cf7c3570ef93eb9c4d48e4bfa06`
`font_01_sfnt_off000063d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63D5	19416 bytes
SHA-256: `fbd344b2d244d43c4f85e5a566854b76f17b20531264b00863ccd453de295caf`

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