Malicious PDF — malware analysis report

Static analysis result for SHA-256 9287563209392ae9…

MALICIOUS

PDF

98.1 KB Created: 2020-08-11 12:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0e2b149f2c0ab818c63b71cd0525e37 SHA-1: f57bcab234eb65397e3e17be57aad81088191914 SHA-256: 9287563209392ae9a446bc4b463bfa27b8db08237669e7d18a62da897ea3ae4a
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to host or deliver further malicious content. The document body, though heavily obfuscated, contains the same URL and a title that appears to be a lure. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's designed to exploit user interaction with embedded links.

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=boko+haram+insurgency+pdf
    • http://files.moneycoachbill.org/uploads/1/3/1/3/131384098/nifamaru.pdf
    • http://files.inspire-america.org/uploads/1/3/0/8/130813881/2422035.pdf
    • http://libawapip.chiefpricejrotc.com/uploads/1/3/1/4/131406202/zomodowobesu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/a_wrinkle_in_time_chapter_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/akon_blame_it_on_me.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/3869665592.pdf
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/accountant_cv_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/kumetaxezomaxasalubigaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/puxinizos.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/bebegufodaresipeba.pdf
    • https://cdn.shopify.com/s/files/1/0434/1845/2120/files/31967144410.pdf
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/42038113759.pdf
    • https://cdn.shopify.com/s/files/1/0435/4483/8303/files/dozegofuvunuxavu.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_off0001366d.bin
2ea95a3a53779a076ba806b6db050c8b4798c8de7a9bcab5422899e1b0413f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1366D 5556 bytes
font_01_sfnt_off0001492f.bin
e78d77c601f8d793369a530e6d38677aa6d2fb29793e337b69bafc562ef99b18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1492F 10524 bytes
font_02_sfnt_off00016d2a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D2A 4324 bytes

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