PDF malware analysis — malicious · ff1ec22a4b11ff82

MALICIOUS

PDF

46.5 KB Created: 2020-08-19 17:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c3da1c3e8507fd4334f017b64243503d SHA-1: 845467ac73eaeef58c5e75b2c2a08019fde11f03 SHA-256: ff1ec22a4b11ff825321d86a6ace7d3102041bb97af09d18fd6b302c4acb3701

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'consumer reports laptop reviews 2019' and the malicious URL, suggesting a lure. The PDF also contains a large number of embedded links, many hosted on Shopify, which is flagged as a link farm. 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.ru/pify?keyword=consumer+reports+laptop+reviews+2019
- http://files.mgtowtv.com/uploads/1/3/1/8/131857540/8330549.pdf
- http://files.northwestchurchofchristchicago.org/uploads/1/3/1/4/131452826/6ae87.pdf
- http://files.chartistcollins.com/uploads/1/3/1/6/131636612/mobovef.pdf
- http://files.write-mindedwoman.com/uploads/1/3/1/6/131607565/sarinejofoxan-zutotifit.pdf
- http://sokabe.hamanncommunication.com/uploads/1/3/1/0/131070420/0491e.pdf
- http://files.chart
- https://cdn.shopify.com/s/files/1/0430/9050/9973/files/41578106670.pdf
- https://cdn.shopify.com/s/files/1/0449/9508/4456/files/25882914705.pdf
- https://cdn.shopify.com/s/files/1/0431/8851/9076/files/tahlilan_dan_yasinan.pdf
- https://cdn.shopify.com/s/files/1/0430/9080/4893/files/74160842027.pdf
- https://cdn.shopify.com/s/files/1/0429/4452/8550/files/bivejeruba.pdf
- https://cdn.shopify.com/s/files/1/0428/3065/9751/files/zedalemubenume.pdf
- https://cdn.shopify.com/s/files/1/0434/7386/2821/files/pajewadosilevum.pdf
- https://cdn.shopify.com/s/files/1/0437/8938/5879/files/zefiserolu.pdf
- https://cdn.shopify.com/s/files/1/0438/7491/0376/files/99549054025.pdf
- https://cdn.shopify.com/s/files/1/0437/6372/8545/files/angielski_dla_pocztkujcych.pdf
- https://cdn.shopify.com/s/files/1/0434/7474/7558/files/neat_scanner_driver.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006e56.bin` `a8640cb23b15ac802f89dd0648c07b7ad030d8b62c5f78624c3814794ace58c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E56	1684 bytes
`font_01_sfnt_off000076ba.bin` `46bd3d0e71c3f351609580449b2837b26407f8559900bd04d88c69bfd4a8569e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76BA	5504 bytes
`font_02_sfnt_off00008967.bin` `37249bf76f0e05fac36227c624475a8395112b0cd4244e6a87882bb6de9af3cb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8967	10480 bytes

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