PDF malware analysis — malicious · 85f2ce94af2f2648

MALICIOUS

PDF

45.7 KB Created: 2020-07-30 10:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5110a5894dd1f6fb48b6fbac5f644f1e SHA-1: 5157c460789728e8a677d4552eb66fe9461c86c6 SHA-256: 85f2ce94af2f2648d51110858da52b396b862c0d8d5ed453ab9b59d8900954ed

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating it's a PDF link farm. One of the primary URLs, 'https://ttraff.com/pify?keyword=balantidiasis+tratamiento+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content. The overall pattern suggests an attempt to leverage SEO or link manipulation to direct users to malicious content.

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=balantidiasis+tratamiento+pdf
- http://files.videogamelegacy.com/uploads/1/3/1/4/131453924/ad9d903.pdf
- http://files.abeautifulmess.net/uploads/1/3/0/8/130874101/tovovab.pdf
- http://files.stayatlemas.com/uploads/1/3/1/6/131607712/patuguvep_nagizoki_selusowef.pdf
- http://files.linksstainedglass.com/uploads/1/3/1/3/131379496/matasawuvanadaret.pdf
- http://files.roaminggoatmi.com/uploads/1/3/0/7/130776483/b5e4b401.pdf
- https://cdn.shopify.com/s/files/1/0429/6579/4965/files/23145334818.pdf
- https://cdn.shopify.com/s/files/1/0436/3137/8592/files/7947699526.pdf
- https://cdn.shopify.com/s/files/1/0429/5557/1353/files/xazovedokalekulojimut.pdf
- https://cdn.shopify.com/s/files/1/0428/0811/5366/files/donabezonogakejugaz.pdf
- https://cdn.shopify.com/s/files/1/0433/0507/4838/files/35097557769.pdf
- https://cdn.shopify.com/s/files/1/0433/5029/4678/files/26117582457.pdf
- https://cdn.shopify.com/s/files/1/0430/3234/6773/files/18205326079.pdf
- https://cdn.shopify.com/s/files/1/0428/8095/8617/files/7203153346.pdf
- https://cdn.shopify.com/s/files/1/0429/7729/6543/files/tomuxixa.pdf
- https://cdn.shopify.com/s/files/1/0435/1744/4264/files/77413021108.pdf
- https://cdn.shopify.com/s/files/1/0438/2379/2285/files/87615799870.pdf
- https://cdn.shopify.com/s/files/1/0430/9798/1082/files/sefozewe.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.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/
- https://cdn.shopify.com/s/files/1/0433

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000073d0.bin` `5bf26c82c83216e07e5e404da6ce3cf472e1b2ffe96849ba50763562198d0919`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73D0	5024 bytes
`font_01_sfnt_off000084ba.bin` `bc1c24b943334eb47f71f2be8aed7683972d4d4e557b98511cfe3f357d11d089`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84BA	10760 bytes

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