Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4f459fba872af9…

MALICIOUS

PDF

51.9 KB Created: 2020-09-17 11:05:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84c7c5e914a9cb30000842daef8daa09 SHA-1: 98584b204c71927ac7ce2765d6a9b1b96f767d8c SHA-256: 2b4f459fba872af9a9d7c1fc129f229ea200bcf2c2af0cfcecf5f907a2d62e00
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to redirector infrastructure. One prominent link, 'https://ttraff.club/wix?keyword=happy+21st+birthday+triplets', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to lure the user to click the malicious link. No scripts were extracted from this sample.

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.club/wix?keyword=happy+21st+birthday+triplets
    • http://wuboledi.locallyhandbuilt.com/uploads/1/3/1/6/131637308/7695306.pdf
    • http://vuwasar.wendycooneylightingdesign.com/uploads/1/3/1/4/131438110/2893348.pdf
    • http://files.erikajuran.com/uploads/1/3/0/8/130874328/3316821.pdf
    • http://kifujome.firstchristianwinchester.org/uploads/1/3/1/1/131164229/f4d4ec3b.pdf
    • http://files.abidingheartshomecare.com/uploads/1/3/1/4/131407952/39e7b0c3c9c3837.pdf
    • http://zimapaz.adrianahammond.com/uploads/1/3/1/4/131437089/fc1d30eb5298.pdf
    • http://gutisuw.wycombeparanormal.com/uploads/1/3/0/8/130815137/5ca200a014f.pdf
    • http://xopejil.insurancehousewales.co.uk/uploads/1/3/1/4/131453943/vimex-xolajufaxok.pdf
    • http://wigozuna.wskvfm.com/uploads/1/3/1/0/131070161/mimutetifufiporar.pdf
    • http://files.owensfamilywellness.org/uploads/1/3/1/4/131437241/fisejaf-mojugulogam.pdf
    • https://cdn.shopify.com/s/files/1/0439/4008/5915/files/salesforce_trust_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0956/4064/files/nawoxagikit.pdf
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/dezonijamoletugozulef.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/vojovejowokutasevem.pdf
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/98810439168.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_off00008ce4.bin
925897c36d63d6bb7bbaaea6767d496229a2a256d93b09edce30129fc3b79d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE4 5432 bytes
font_01_sfnt_off00009f58.bin
b2d61cc43ad1d8b5e47b46b6be0259e9ad15952938a76a62333de1f615137235		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F58 10260 bytes

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