PDF malware analysis — malicious · 47edec8b1d04f764

MALICIOUS

PDF

57.7 KB Created: 2020-08-05 14:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a69bd8fecd02ce11168a6c896f760e60 SHA-1: 70e7e8abe516f865b888409b06750ff625dfc630 SHA-256: 47edec8b1d04f764abb3f8e9afd242ab21dbbf802e428c16184fb64983891add

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, includes a URL that appears to be the initial lure. The presence of a large number of external PDF links, as flagged by PDF_SEO_LINK_FARM, suggests a tactic to distribute malicious content or manipulate search results. The ML classifier strongly indicates maliciousness.

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=sympathetic+and+parasympathetic+nervous+system+pdf
- http://files.minagcapital.com/uploads/1/3/1/3/131378952/d33ac7c4d850003.pdf
- http://files.dkgbetaphica.org/uploads/1/3/1/3/131378990/b36469a09200.pdf
- http://files.amyclevelandart.com/uploads/1/3/0/7/130775334/zafop-gevilotezoweleb-kikogokubok-tibaritiriwe.pdf
- https://cdn.shopify.com/s/files/1/0429/4351/2732/files/tetivekobusefesajivej.pdf
- https://cdn.shopify.com/s/files/1/0430/5770/9210/files/de_cero_a_uno_peter_thiel.pdf
- https://cdn.shopify.com/s/files/1/0434/9945/4628/files/67208444002.pdf
- https://cdn.shopify.com/s/files/1/0432/0083/9842/files/xevakurobudet.pdf
- https://cdn.shopify.com/s/files/1/0434/7763/1126/files/siwubitizovevesema.pdf
- https://cdn.shopify.com/s/files/1/0431/9277/8916/files/ruger_blackhawk_serial_numbers.pdf
- https://cdn.shopify.com/s/files/1/0427/6820/3942/files/81916693817.pdf
- https://cdn.shopify.com/s/files/1/0430/9427/8293/files/zasar.pdf
- https://cdn.shopify.com/s/files/1/0431/4939/4080/files/mugetufuzepixisomedu.pdf
- https://cdn.shopify.com/s/files/1/0430/4207/8877/files/46701250454.pdf
- https://cdn.shopify.com/s/files/1/0433/9836/5340/files/pedivubironadika.pdf
- https://cdn.shopify.com/s/files/1/0432/5716/8027/files/50716644471.pdf
- https://cdn.shopify.com/s/files/1/0437/0612/2393/files/demijazegexurigasuw.pdf
- https://cdn.shopify.com/s/files/1/0434/1887/8104/files/76684993331.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_off00009c89.bin` `0e738bb0d4d36f28eb088c7171f258a04672d76da18b261f9e9306ca5a7125e7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C89	5628 bytes
`font_01_sfnt_off0000af90.bin` `24b6d4292718cd9df6b80f58d20f3a9cfa1fce202a6fccff361221754a96a4ed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF90	13216 bytes

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