PDF malware analysis — malicious · 9cbe5be7740a74b1

MALICIOUS

PDF

45.4 KB Created: 2020-08-04 08:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b534505d7d14b35ad2db8d7ad57c9fa4 SHA-1: b70d10493b265e0872107af1dff1361d286bf7eb SHA-256: 9cbe5be7740a74b1d8106c769213c55a8301bf118472d6e1459e2289226811ba

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=isaiah+berlin+four+essays+on+liberty+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
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.
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://ttraff.com/pify?keyword=isaiah+berlin+four+essays+on+liberty+pdf
- http://files.usasubs.com/uploads/1/3/2/6/132681824/6678686.pdf
- http://files.lutheranchurch-redbluff.org/uploads/1/3/2/3/132303351/suzorazukexukiren.pdf
- http://files.bychoicewellness.com/uploads/1/3/0/7/130739027/48edf96bb4b.pdf
- https://cdn.shopify.com/s/files/1/0431/8612/7009/files/blue_lily_lily_blue.pdf
- https://cdn.shopify.com/s/files/1/0439/0453/2648/files/52630057861.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xezunegudowafosixezuvi.pdf
- https://cdn.shopify.com/s/files/1/0429/7303/6697/files/animated_discord_emojis.pdf
- https://cdn.shopify.com/s/files/1/0435/8891/1267/files/77624976776.pdf
- https://cdn.shopify.com/s/files/1/0433/6844/8152/files/bimawu.pdf
- https://cdn.shopify.com/s/files/1/0430/6383/6834/files/96126238850.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
- https://cdn.shopify.com/s/files/1/0440/7702/3384/files/skyrim_legendary_guide.pdf
- https://cdn.shopify.com/s/files/1/0430/4781/3269/files/xiwuvepivaratizal.pdf
- https://cdn.shopify.com/s/files/1/0433/4921/3349/files/reduce_screen_tearing.pdf
- https://cdn.shopify.com/s/files/1/0432/5307/2022/files/xufepesasepori.pdf
- https://cdn.shopify.com/s/files/1/0432/2538/3073/files/mozojemetobabesozukate.pdf
- https://cdn.shopify.com/s/files/1/0429/8381/7375/files/84720875928.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000743f.bin` `412767a4668431e505b6c9d6111377fd76e75068e38a0ed0806424c832d2b3ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x743F	5308 bytes
`font_01_sfnt_off00008647.bin` `4190226bf441658eddbd9066b332bfab0e8caa79b849cf02f7f16506953a1969`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8647	10040 bytes

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