PDF malware analysis — malicious · 75438e84f018d0b1

MALICIOUS

PDF

34.6 KB Created: 2021-06-21 16:27:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 3b9a4848454210322367a9a9a912d619 SHA-1: d9679e0f87560d3771212f976f0000855eef578d SHA-256: 75438e84f018d0b10e7d810a81e10bc92b741ebd8fbefe1648e55f2fb2e21d0b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a heuristic firing for a PDF link farm, indicating a likely attempt to redirect users to malicious sites. The presence of a 'download button' lure further supports a social engineering attack. The ML classifier's high confidence score reinforces the malicious nature of this document.

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/roblox-supreme-free-game-hack PDF link annotation
- https://www.nara.org.uk/uploads/files/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-tiktok-likes-for-free_GM835599320.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-free-outfits-avatar-girls_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/pastebincom-free-robux-code_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/how-to-get-free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
- https://www.nara.org.uk/uploads/files/files/free-100-robux-gift-card-codes-2021-no-human-verification_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_off000030ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30EC	22080 bytes
SHA-256: `9d58e05d3ff11485fc6d4b2be9327b4090b3f3f7eeee5c90b132e9d8ff9c48d0`
`font_01_sfnt_off0000619a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x619A	19224 bytes
SHA-256: `0bafa1428965bbcc9cf06f8a52c94ef627db79536b05a67285bef9bc699c194f`

Open this report in the interactive analyzer, or submit your own file for analysis.