Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cf6a049629c636…

MALICIOUS

PDF

39.0 KB Created: 2020-08-27 21:01:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 027c2713978af09506033ae66adbbe29 SHA-1: 9edfc58246a3ccd5bd2e8cccaf6abe34b35fda91 SHA-256: 96cf6a049629c6366c114a7af359e910ff896325377ae0c8d04f04d018dff582
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=calculos+quimicos+de+benson'. It also exhibits characteristics of a PDF link farm, embedding a large number of external links, many of which point to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body contains a title that appears to be a lure for the redirector.

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.com/pify?keyword=calculos+quimicos+de+benson
    • http://files.outrageousselfcare.com/uploads/1/3/2/8/132815054/fexikepebedasumino.pdf
    • https://cdn.shopify.com/s/files/1/0435/3218/9860/files/14982706791.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0435/1062/8511/files/tegimudunif.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/self_contained_breathing_apparatus_parts.pdf
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/marginal_costing_vs_absorption_costing.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/58986670442.pdf
    • https://cdn.shopify.com/s/files/1/0461/8954/3573/files/ameryka_pnocna_informacje_dla_dzieci_prezentacja.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/teach_yourself_beginner_s_russian.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/72150842178.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1997/files/90456632173.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/26859945495.pdf
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/61718557272.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.

FilenameKindSourceSize
font_00_sfnt_off00004aa9.bin
a9114b3d459e2d20927d1343f7339d0772883e5d8349794531937fccb6924d55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA9 5080 bytes
font_01_sfnt_off00005bc7.bin
7c189585de8d795756bc4ebd0cabd6cdf1fcdd93b3dbb6bc1ec50a4a24c918c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC7 11020 bytes
font_02_sfnt_off00007fc0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 4324 bytes

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