PDF malware analysis — malicious · 2626ee5960dbacdb

MALICIOUS

PDF

51.8 KB Created: 2020-08-04 08:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a9b00469396799dc0fc4f7e56c4f3854 SHA-1: 672561fbfdbe9f89c04c6bb1944f838307b77b75 SHA-256: 2626ee5960dbacdbd128c081b8fc72edaeb25a669c71834944485a6f7fc0ac52

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'valores comerciales de capacitores electroliticos pdf' and references wkhtmltopdf, suggesting a lure document. The presence of a link farm hosted on Shopify, combined with the malicious redirector, indicates a likely attempt to drive traffic to malicious infrastructure or manipulate search results.

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.cc/pify?keyword=valores+comerciales+de+capacitores+electroliticos+pdf
- http://files.jukkahuitila.com/uploads/1/3/1/3/131383651/5365725.pdf
- http://files.chartiergrp.com/uploads/1/3/0/7/130775231/1533294.pdf
- http://files.australianruralfiction.com/uploads/1/3/2/6/132681824/deranopamek_doxasebevamis_nirunafixefu.pdf
- http://files.mississippidistrictexchange.com/uploads/1/3/1/4/131454114/mitesurajalalosase.pdf
- http://files.ginostrattoria.com/uploads/1/3/2/6/132682040/takixilipo_gijodujigos_nilebikusopenox.pdf
- https://cdn.shopify.com/s/files/1/0433/4570/7166/files/47332672250.pdf
- https://cdn.shopify.com/s/files/1/0432/0549/2904/files/76792415834.pdf
- https://cdn.shopify.com/s/files/1/0429/3387/8940/files/36048360704.pdf
- https://cdn.shopify.com/s/files/1/0430/9699/8041/files/83310084166.pdf
- https://cdn.shopify.com/s/files/1/0429/8748/7395/files/takene.pdf
- https://cdn.shopify.com/s/files/1/0436/7283/0105/files/critical_path_analysis_notes.pdf
- https://cdn.shopify.com/s/files/1/0438/6009/9222/files/93128983397.pdf
- https://cdn.shopify.com/s/files/1/0433/6277/9295/files/powasigogid.pdf
- https://cdn.shopify.com/s/files/1/0430/4017/8333/files/tutikuf.pdf
- https://cdn.shopify.com/s/files/1/0429/8565/2375/files/77646760256.pdf
- https://cdn.shopify.com/s/files/1/0436/9947/0486/files/navokafi.pdf
- https://cdn.shopify.com/s/files/1/0431/4939/4080/files/741900264.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_off00008899.bin` `f49065a650bab44c95236380243f8a00a25d8f03a310f09d465fd6d82648b406`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8899	5264 bytes
`font_01_sfnt_off00009a70.bin` `9a8e3ab8b827635af079212f4868354b685681b255223351858b6328dc731d14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A70	11400 bytes

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