Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8e0f28e007977b…

MALICIOUS

PDF

56.1 KB Created: 2020-07-10 08:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0bd3dd0cafc6ae99f67d69d57d76aa9 SHA-1: 9fc928b70ffda0be89e1d04786ffe55bff9338d4 SHA-256: 3f8e0f28e007977bb4244c467b1a8e5ea88202ffb5a5189c51473ab6de13687b
150 Risk Score

Malware Insights

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

This PDF document contains a malicious redirector link disguised as a manual for 'Hobbywing ezrun 80a'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms that the link at https://ttraff.com/wb?keyword=hobbywing%20ezrun%2080a%20manual leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the presence of numerous other PDF links, suggesting a link farm designed to manipulate search engine results and distribute malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this file.

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/wb?keyword=hobbywing%20ezrun%2080a%20manual
    • http://files.funom.org/uploads/1/3/2/6/132682681/6514928.pdf
    • http://files.cfuwhh.ca/uploads/1/3/2/6/132681390/11d990eeef.pdf
    • http://files.emmaushousewinnipeg.ca/uploads/1/3/1/4/131406739/rajix.pdf
    • http://files.lettspartynj.com/uploads/1/3/1/3/131384412/2284758.pdf
    • http://files.midcenturymomern.com/uploads/1/3/0/8/130813458/66ab6007948817.pdf
    • http://files.streetical.com/uploads/1/3/1/4/131406068/josokezab_jepelodu_xaxuviriradisow.pdf
    • http://files.chqchurches.net/uploads/1/3/2/6/132681343/kedadawuzevip.pdf
    • http://files.tartancanvas.com/uploads/1/3/1/4/131438571/tedosawuvip-susadapalemimi.pdf
    • http://files.oldsoulmercantile.com/uploads/1/3/1/8/131856052/3007642.pdf
    • http://files.tenthreecleaning.co.uk/uploads/1/3/1/4/131438570/40f6fcb7a.pdf
    • http://files.proyectocubabat.com/uploads/1/3/1/4/131453018/8751999.pdf
    • https://jagenanevor.files.wordpress.com/2020/07/18403717617.pdf
    • https://rupiwenete.files.wordpress.com/2020/06/90719477092.pdf
    • https://joxaloli.files.wordpress.com/2020/06/67757512807.pdf
    • https://wogeberej.files.wordpress.com/2020/06/27922016399.pdf
    • https://popidoz.files.wordpress.com/2020/06/pejixilurutapiduzadipir.pdf
    • https://vadupavegeli.files.wordpress.com/2020/06/48821420502.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30611133668.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bopeberovejaxurid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66923604261.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007081.bin
50a5c8644835e0bd357a60b681ebe6007b2bf3fe625c8450f6d4117a4ae1a262		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7081 2996 bytes
font_01_sfnt_off00007b3f.bin
91493701232b90886f9dc8ebfb5f6590be715cbae88bd901f5419158d9e9f5a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3F 5308 bytes
font_02_sfnt_off00008d3d.bin
38fc158d1fede9a2b718bd28d319825bd284aec903e1be66c6948261e8c3b1bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3D 14960 bytes
font_03_sfnt_off0000bbb4.bin
0be84d2d0547f1f02aa0071b49020aaa73ac7e6a4c4dee27a4da8627c6f2d0ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB4 16092 bytes

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