PDF malware analysis — malicious · 2f1ecd2aec996050

MALICIOUS

PDF

43.3 KB Created: 2020-08-09 04:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b22d35d6bf81869750a8161940431ec6 SHA-1: b25a4149df14f1c3d551267f9bfc916e6272d0f2 SHA-256: 2f1ecd2aec996050bcfd15b8245a0e8cb0e58fa365ec7d0ba6cb211231069375

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'free pumpkin carving stencils pdf' and includes the malicious URL. This suggests a social engineering lure to redirect users to malicious content. The presence of numerous embedded links, many pointing to Shopify, further supports the link farm heuristic.

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.ru/pify?keyword=free+pumpkin+carving+stencils+pdf
- http://files.wombwelltownfc.net/uploads/1/3/1/3/131379213/6342887.pdf
- http://files.bradythrelfall.com/uploads/1/3/1/3/131380054/dodurudezega_jesoj_porudixekup.pdf
- http://files.edwinmclachlan.com/uploads/1/3/0/7/130739525/3dfbca03b6ca3a.pdf
- http://files.antiqueautomobilia.com/uploads/1/3/1/0/131070336/7d2cce77.pdf
- http://files.jeujeulafoille.com/uploads/1/3/2/6/132682685/garijanonanej_zivegizemud_manefis.pdf
- https://cdn.shopify.com/s/files/1/0437/6192/6293/files/63212359370.pdf
- https://cdn.shopify.com/s/files/1/0428/8082/7558/files/xubenorutorafigufalobazos.pdf
- https://cdn.shopify.com/s/files/1/0429/8155/6375/files/jinixusu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
- https://cdn.shopify.com/s/files/1/0433/9158/2357/files/xarojopenugusovumawi.pdf
- https://cdn.shopify.com/s/files/1/0433/5743/8101/files/que_es_cetosis.pdf
- https://cdn.shopify.com/s/files/1/0432/5317/0339/files/17244160042.pdf
- https://cdn.shopify.com/s/files/1/0430/4352/0666/files/16571217166.pdf
- https://cdn.shopify.com/s/files/1/0431/9975/8497/files/naval_architecture_free_download.pdf
- https://cdn.shopify.com/s/files/1/0431/3874/4469/files/all_bearing_types.pdf
- https://cdn.shopify.com/s/files/1/0429/8565/2375/files/wopatinikowupasakev.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93880590480.pdf
- https://cdn.shopify.com/s/files/1/0440/6332/6358/files/dizulajefatazup.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_off00006ad6.bin` `594a8e3114b322cf36b40e6b29fefc9dd25b50dfbc29d2e330d279ffa27d71e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AD6	5556 bytes
`font_01_sfnt_off00007db4.bin` `23b640529f6c52a6c73345a57c3bcb7412af7a7a08232f34dda4a6dd85af4172`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DB4	10000 bytes

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