PDF malware analysis — malicious · f0af761f4eddca9f

MALICIOUS

PDF

90.0 KB Created: 2020-07-29 11:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bbb9c31ab8179914880c435cc2cc2e18 SHA-1: b1dff5a31d57c15ee2c3c45b25ff47a9e0a027b3 SHA-256: f0af761f4eddca9f110a4ddb812d790112e8d927d742bad6ce2e1700636a96d4

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to potentially harmful content via these links.

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=serological+methods+for+viral+diagnosis+pdf
- http://files.hypopara-awarenessday.com/uploads/1/3/0/7/130739782/jenujevugebaxemit.pdf
- http://files.almamusicandartsfest.org/uploads/1/3/1/0/131069789/710708.pdf
- http://files.mrssenasclass.com/uploads/1/3/1/4/131437601/gonomisixukuzexozi.pdf
- http://files.istolo.net/uploads/1/3/1/1/131163712/monunot-wosejavivasev-jubizosut.pdf
- https://cdn.shopify.com/s/files/1/0439/4981/8024/files/zasutapawinuzukudu.pdf
- https://cdn.shopify.com/s/files/1/0431/6502/4412/files/92644031808.pdf
- https://cdn.shopify.com/s/files/1/0437/8941/8657/files/77719888505.pdf
- https://cdn.shopify.com/s/files/1/0434/6167/3126/files/ponivififunudopulabupe.pdf
- https://cdn.shopify.com/s/files/1/0431/6397/5835/files/37913394756.pdf
- https://cdn.shopify.com/s/files/1/0431/2930/7296/files/vumijumebefofegek.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
- https://cdn.shopify.com/s/files/1/0432/2597/2904/files/22334282641.pdf
- https://cdn.shopify.com/s/files/1/0435/2340/8032/files/vosakup.pdf
- https://cdn.shopify.com/s/files/1/0433/2702/9400/files/61842547796.pdf
- https://cdn.shopify.com/s/files/1/0435/4962/2431/files/bamekonuburiralurap.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_off00010f13.bin` `1c0daa7e8bbc92c246722bfd96d99bb565ed2b0e9af90a8b7e18798e238b5241`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F13	5520 bytes
`font_01_sfnt_off000121ac.bin` `801261ac96efb2acc1386e155da446a7ce69fb8e57ad14946cec613b73213023`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x121AC	10344 bytes
`font_02_sfnt_off00014500.bin` `98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14500	16148 bytes

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