Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed10f0b9f35245ad…

MALICIOUS

PDF

44.2 KB Created: 2020-09-12 01:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04453944de1812442095e8479b049afa SHA-1: f74e2b9721547360168f48941ce98826d6084921 SHA-256: ed10f0b9f35245adb32f4afa7a3e72c772d3e6d8367ea6b42749eda073ba3920
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a critical redirector link to `https://ttraff.club/wix?keyword=sql+server+2014++express+edition`. This indicates the document is designed to lure users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. 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.club/wix?keyword=sql+server+2014++express+edition
    • http://files.k9rehabvet.com/uploads/1/3/1/6/131606583/gatuzeluvobibejev.pdf
    • http://vafefove.ladyjp.org/uploads/1/3/2/6/132695384/9536883.pdf
    • http://fapozimut.classicalvintagerestorations.com/uploads/1/3/1/4/131437123/papoxax_bodisojogujusa_gufubu_miwepigefupo.pdf
    • http://files.yukondaffodils.com/uploads/1/3/0/7/130738903/zezomubenafev.pdf
    • http://files.nowthenfuture.com/uploads/1/3/2/6/132683330/xaxevamemidu.pdf
    • http://files.ronanboudier.com/uploads/1/3/0/7/130775677/5840561.pdf
    • http://xenabazal.dmrcrafters.com/uploads/1/3/1/1/131164250/85822c5744461.pdf
    • http://lazonefe.milagrodesignsantafe.com/uploads/1/3/1/6/131637419/5497978.pdf
    • https://static.usrfiles.com/ugd/b8c837_33a20c2671d049069480350bf5f2db69.pdf
    • https://static.usrfiles.com/ugd/353d00_d1669940154b46feb79f69718e7f8d0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c6641363833409b82816d758d0509e3.pdf
    • https://static.usrfiles.com/ugd/decf6f_4da638a11e164bf7a30247968312ff95.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/waste_management_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0564/files/building_materials_and_construction_technology.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/cultivo_de_bacterias_en_agar.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_off00006147.bin
097972a5b49b853fddf5597e30292c87f4e26575fc02fe6a79b47367d2230f08
pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 5304 bytes
font_01_sfnt_off0000736a.bin
1d8ef6478e394c2ed211282fbc43d925d13954c4143315ac7ea094cbc940d2e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x736A 10112 bytes
font_02_sfnt_off000095d8.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x95D8 4324 bytes