PDF malware analysis — malicious · 7b46ebaad722b683

MALICIOUS

PDF

45.1 KB Created: 2020-07-30 22:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd2f10238a8e993f56839fd7e050be00 SHA-1: 67773d9e40c319add228c567d6afc5bcc530c727 SHA-256: 7b46ebaad722b683d98c3a5a4bfa033f012dd7557d4751073c5a3e395e1d6763

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with many pointing to Shopify domains hosting other PDF files. One critical heuristic indicates a malicious redirector link, suggesting these links are part of a link farm or a redirection scheme. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves leveraging these links for malicious purposes, potentially SEO manipulation or user redirection.

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=medicinal+plants+introduction+pdf
- http://files.jdmwebsitedesign.com/uploads/1/3/1/8/131856374/buluzodipobexunu.pdf
- http://files.societyofoldsalts.com/uploads/1/3/1/4/131407918/469749.pdf
- http://files.fincascoffee.com/uploads/1/3/0/7/130740573/jinuma.pdf
- http://files.bethgagliardi.com/uploads/1/3/1/6/131636758/lumusazi.pdf
- http://files.gillisplayandlearn.com/uploads/1/3/1/3/131398006/2205577.pdf
- http://files.bethgagliardi.com/uploads/1
- https://cdn.shopify.com/s/files/1/0434/2225/3205/files/fimabikokupez.pdf
- https://cdn.shopify.com/s/files/1/0428/3842/5767/files/fomobapejuferodag.pdf
- https://cdn.shopify.com/s/files/1/0431/4578/9600/files/82370525977.pdf
- https://cdn.shopify.com/s/files/1/0434/3712/9895/files/gabageloxoxabapun.pdf
- https://cdn.shopify.com/s/files/1/0433/5131/0488/files/pifosukisuduf.pdf
- https://cdn.shopify.com/s/files/1/0431/2154/1271/files/78050150814.pdf
- https://cdn.shopify.com/s/files/1/0433/9469/5318/files/nikukidepa.pdf
- https://cdn.shopify.com/s/files/1/0434/0937/5383/files/masetutabig.pdf
- https://cdn.shopify.com/s/files/1/0431/6246/8514/files/60800654937.pdf
- https://cdn.shopify.com/s/files/1/0432/0470/6464/files/54013471957.pdf
- https://cdn.shopify.com/s/files/1/0430/7088/1946/files/76751459790.pdf
- https://cdn.shopify.com/s/files/1/0427/6633/6167/files/fipudewapulos.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_off0000725a.bin` `5ac8b23ce04870227dc7c2f6fdffc8152f0c5961b11356b58024645eaf3c73e3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x725A	5036 bytes
`font_01_sfnt_off0000837b.bin` `60a1d048c38e8e64c6b1d7a860639512616faf14aa4056289083d66fedd7d252`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x837B	10776 bytes

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