Malicious PDF — malware analysis report

Static analysis result for SHA-256 218af6dbdae45689…

MALICIOUS

PDF

30.6 KB Created: 2020-09-07 16:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb94621396a4d967cc5dad71c4f184d6 SHA-1: 3878a2508fe02a1360aef75ef8ea696c6045c57f SHA-256: 218af6dbdae4568959f6264d7ac6acf376a6491779015cbb3f5c3c91a86a4592
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=badlion+client+3.+0'. This URL is presented in a way that suggests it is a download for 'Badlion client 3.0', indicating a social engineering lure. The PDF also contains a link farm heuristic, suggesting it's part of a larger campaign to drive traffic to various sites. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=badlion+client+3.+0
    • https://static.usrfiles.com/ugd/16a96a_594acf55bcf14331a63a0237e6d327e0.pdf
    • https://static.usrfiles.com/ugd/0c268c_058078496cdc4132b60d7a28e3bbcf75.pdf
    • https://static.usrfiles.com/ugd/e3c460_e33f7ac9351244768c5e2a20cc4e9e30.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/watixesobomogupujojopit.pdf
    • https://static.usrfiles.com/ugd/b1dabf_f024e8aa4ee946e299388c087cf97803.pdf
    • https://static.usrfiles.com/ugd/b28ae2_fd4a1e063b3045ebb1daa8306b02f9a7.pdf
    • https://static.usrfiles.com/ugd/0d018b_63ee3e9efec847cc803602b3ff1d0078.pdf
    • https://static.usrfiles.com/ugd/33a16d_8965d581eb374163bef9e2ba27e4ade5.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_off00003ce2.bin
745a86f9df93733dc5828ac944c08e3e605b90c3d54a46a70356263e9ffe186f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CE2 5044 bytes
font_01_sfnt_off00004e20.bin
78a302efce5dbc4bd6efce36153a3519be5b575222421252a20f66690792967d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E20 9484 bytes

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