Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94721241afd7147…

MALICIOUS

PDF

39.5 KB Created: 2020-08-01 07:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0f28c700864359d3c6233acb344df63 SHA-1: f0afdcab9a3e2decb62491a4d45efb4496626f9c SHA-256: c94721241afd7147cee1efe5e65f67865624c64dd8a34770961c396cc840cf3a
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a Microsoft update notification. The PDF also features a link farm, with many links pointing to shopify.com domains, likely for SEO manipulation to increase visibility. The ML classifier strongly indicated 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=microsoft+autoupdate+2.+3.+6
    • http://files.ichcnj.org/uploads/1/3/1/6/131606223/vaximemotivab.pdf
    • http://files.alicefernandes.com/uploads/1/3/2/6/132681316/sasiv_fowixono_nemowuxuwedamot_pezonizuku.pdf
    • http://files.ellashannon.com/uploads/1/3/1/4/131412558/runebatuletoli_sopanaf_duxaw_gakuxi.pdf
    • http://files.chillicothemudcats.com/uploads/1/3/2/3/132302894/memedera_vununoxujiwuv_terabozavizo_zaxekilad.pdf
    • http://files.aes-music.org/uploads/1/3/0/8/130874671/3239038.pdf
    • https://cdn.shopify.com/s/files/1/0439/2439/0056/files/30000453375.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/dawusedej.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/94478349767.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/62944014828.pdf
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/73649699432.pdf
    • https://cdn.shopify.com/s/files/1/0432/9390/0958/files/51299699851.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/22149776779.pdf
    • https://cdn.shopify.com/s/files/1/0432/6640/8603/files/95453525535.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/kupevutaxutabekamebosejaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/16042486024.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuzizurogepibisomagin.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_off00005c5e.bin
b31ba9c13d2fe1646a73da88b8e2d3b0d28970f402786d81ccc0096c0544522d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5E 5604 bytes
font_01_sfnt_off00006f88.bin
edcc38234ad840b974cbdfee7958d5a7dcd13915134c2e61faa071950baa2f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F88 9804 bytes

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