Malicious PDF — malware analysis report

Static analysis result for SHA-256 2647cddcfbc8cf82…

MALICIOUS

PDF

33.5 KB Created: 2020-08-24 13:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1de3c40f219fcac0a6305fa5e87294e SHA-1: f3dd8866263a9e0337a1847512b6d6b3ad398da7 SHA-256: 2647cddcfbc8cf8284621bf303506c19164d3cd9da981a536e1f21bb457493de
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent. No scripts were extracted from this sample.

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=environmental+air+pollution+nptel+pdf
    • http://fotup.nssupply.com/uploads/1/3/0/9/130969080/e3e4338c563f.pdf
    • https://cdn.shopify.com/s/files/1/0431/7062/7735/files/mi_burrito_sabanero_piano.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/1336634235.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/fitbit_charge_3_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/63971410407.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/nilisozarejutipabejem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/571475918.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/webepuvedinovaxijixen.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/48379308589.pdf
    • https://cdn.shopify.com/s/files/1/0431/6046/9660/files/bluebeard_s_bride_book_of_rooms.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.

FilenameKindSourceSize
font_00_sfnt_off00004678.bin
6673bbd7814f8a5a1e1bbf7f5fb3c7e6d3fea5aca5bb038c0c524eb207f874bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4678 5028 bytes
font_01_sfnt_off0000577a.bin
0a964094eedc0508b65dae10eb00333ac4a73fc7a0464300c7e685db0c283305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577A 9960 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.