PDF malware analysis — malicious · 8e0f47d4b51836d4

MALICIOUS

PDF

54.0 KB Created: 2020-07-30 16:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b4b5f9c6c994befc3d8ff1ce33f28915 SHA-1: f6c125a47d9d2422b18c93e73ee047885f37bd01 SHA-256: 8e0f47d4b51836d4f94180eae32f7ce0da667dc8393758084b572d97e658dd33

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a utility for reordering PDF pages. This lure is intended to trick users into clicking the link, which leads to the malicious infrastructure at 'ttraff.ru'. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm or distribution method for malicious content. The ML classifier strongly indicates malicious intent.

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=reorder+pdf+pages+acrobat+reader
- http://files.jenniferbrockwell.com/uploads/1/3/1/1/131163533/zuzisu_japuzafobajota.pdf
- http://files.superiormachineandfab.com/uploads/1/3/2/8/132815154/5810631.pdf
- http://files.huntingforadventure.com/uploads/1/3/0/9/130969633/6782241.pdf
- https://cdn.shopify.com/s/files/1/0432/5546/4104/files/18729122756.pdf
- https://cdn.shopify.com/s/files/1/0434/1573/2376/files/pizev.pdf
- https://cdn.shopify.com/s/files/1/0428/4717/4812/files/gikitego.pdf
- https://cdn.shopify.com/s/files/1/0430/6976/7842/files/fovepazategibuxafi.pdf
- https://cdn.shopify.com/s/files/1/0437/3826/7809/files/xefigupometu.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarozasupevukofapunaxovu.pdf
- https://cdn.shopify.com/s/files/1/0434/5859/2921/files/86624355497.pdf
- https://cdn.shopify.com/s/files/1/0428/0070/9791/files/xokibazi.pdf
- https://cdn.shopify.com/s/files/1/0436/8983/6697/files/90395602415.pdf
- https://cdn.shopify.com/s/files/1/0433/9970/8821/files/vifatobevefo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdf
- https://cdn.shopify.com/s/files/1/0435/9235/1907/files/vomemunifutim.pdf
- https://cdn.shopify.com/s/files/1/0434/5161/3334/files/zodadowisokusemu.pdf
- https://cdn.shopify.com/s/files/1/0429/4138/2812/files/50598743386.pdf
- https://cdn.shopify.com/s/files/1/0435/9634/9602/files/2288087732.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_off0000925d.bin` `0f1fd3446762c7f3c0a208aa34f0e505ac29d06564cbe537cca0b1c3e5e7e331`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x925D	5072 bytes
`font_01_sfnt_off0000a3b1.bin` `afaa9baa68d4db465aaf4cf29f84c99ec8c616e7c74ddc2023e507883e7eaf85`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA3B1	12000 bytes

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