PDF malware analysis — malicious · e4da447b63ebf3d8

MALICIOUS

PDF

40.5 KB Created: 2020-08-25 14:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b60068b00ba614b5a6d03f15e0543010 SHA-1: 21a5f618328b86484afc7906685e46b5ff706880 SHA-256: e4da447b63ebf3d885d8e1309669110a83a4c08a761e8bb76a2661e51c1f0f28

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector hosted on 'ttraff.ru' which is disguised with the keyword 'chrono trigger rom snes'. This lure is intended to trick users into clicking the link, likely leading to a malicious payload. The PDF also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt to increase visibility. The ML classifier 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.ru/pify?keyword=chrono+trigger+rom+snes
- http://files.codewisebc.com/uploads/1/3/0/8/130874217/c0462d89.pdf
- http://files.laurierobertson.ca/uploads/1/3/1/3/131379111/5aa62cdfd81.pdf
- http://nixub.gov.jesstopia.org/uploads/1/3/1/3/131379935/434438b25.pdf
- http://files.wakeforestfarmersmarket.org/uploads/1/3/0/7/130739369/tetujasiledewige.pdf
- https://cdn.shopify.com/s/files/1/0428/7230/7875/files/23586166733.pdf
- https://cdn.shopify.com/s/files/1/0430/8792/1313/files/kuzovogitakobus.pdf
- https://cdn.shopify.com/s/files/1/0437/7824/4765/files/accounting_entries_in_sap.pdf
- https://cdn.shopify.com/s/files/1/0434/1009/6284/files/logo_design_love_free_download.pdf
- https://cdn.shopify.com/s/files/1/0440/1725/4565/files/probability_density_function_notes.pdf
- https://cdn.shopify.com/s/files/1/0435/9438/3522/files/capital_budgeting_process.pdf
- https://cdn.shopify.com/s/files/1/0435/9651/3448/files/disixokisewixepanedarafa.pdf
- https://cdn.shopify.com/s/files/1/0432/6726/0582/files/diroluxutivinonuza.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botezosural.pdf
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/494005402.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
- https://cdn.shopify.com/s/files/1/0430/8218/6905/files/49091574109.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_off00005423.bin` `a79a48b96f7baccc08b548cd46cd77ec34ecab09902c2347035d2e9b6fd6f44e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5423	4668 bytes
`font_01_sfnt_off000063d4.bin` `ca4a135a13fe0eb5d970c207e5b9949d1a63328c201b319a8206b710c13300e0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63D4	10400 bytes
`font_02_sfnt_off00008735.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8735	4324 bytes

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