PDF malware analysis — malicious · 4ef82bc335f1fe2a

MALICIOUS

PDF

42.0 KB Created: 2020-09-09 10:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 019846a88137f1b877aab48ecd4a758c SHA-1: 16bd3ffecbb4336bfbe239317f9f88d99b315373 SHA-256: 4ef82bc335f1fe2a0d3021116602de1cd570be8e209428841bb5087f52e69195

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=significado+de+movimento+uniformemente+variado'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including one to a Shopify domain. The ML classifier also strongly flagged this PDF as malicious.

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=significado+de+movimento+uniformemente+variado
- https://cdn.shopify.com/s/files/1/0433/4931/1646/files/47099864452.pdf
- https://cdn.shopify.com/s/files/1/0432/7974/5192/files/65631580397.pdf
- https://cdn.shopify.com/s/files/1/0433/0756/5209/files/38946646811.pdf
- https://cdn.shopify.com/s/files/1/0432/9753/8203/files/96675476565.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
- https://cdn.shopify.com/s/files/1/0434/6013/3031/files/successful_business_process_management.pdf
- https://cdn.shopify.com/s/files/1/0434/1799/3366/files/adobe_writer_for_windows_7.pdf
- https://cdn.shopify.com/s/files/1/0431/3051/9716/files/84588938749.pdf
- https://cdn.shopify.com/s/files/1/0431/3278/0701/files/xebumut.pdf
- https://cdn.shopify.com/s/files/1/0437/2014/7095/files/81926291294.pdf
- https://cdn.shopify.com/s/files/1/0434/6868/5464/files/doxomizaxerudo.pdf
- https://cdn.shopify.com/s/files/1/0427/4287/4278/files/h3h3_papa_johns.pdf
- https://cdn.shopify.com/s/files/1/0434/5082/6905/files/61929867612.pdf
- https://cdn.shopify.com/s/files/1/0430/8670/8889/files/53372019920.pdf
- https://cdn.shopify.com/s/files/1/0434/3716/2657/files/sukapabuno.pdf
- https://cdn.shopify.com/s/files/1/0431/1020/3545/files/vepamugipiluvibuj.pdf
- https://cdn.shopify.com/s/files/1/0434/0416/5285/files/mufodezov.pdf
- https://cdn.shopify.com/s/files/1/0466/3951/3765/files/97208013219.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_off000060ee.bin` `7682717fb30a948f0e68c190347600d6e7ef726ea4642b3217316abd047f9ea2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60EE	5296 bytes
`font_01_sfnt_off000072ec.bin` `9efd5363aafeb7092bcf1ea70e32c327a2c3e3d8458f0eb16464e3fd2eb3eee1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72EC	12596 bytes

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