Malicious PDF — malware analysis report

Static analysis result for SHA-256 f716a4cba82e1206…

MALICIOUS

PDF

47.0 KB Created: 2020-08-19 06:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7424d38d786f09113f1d7df6b068dd66 SHA-1: e1c24a67abda93647e026b6eba47ebb6dbc3ceb9 SHA-256: f716a4cba82e1206ae90ad40735030d63311a130341c597f645e6f40a2cb8bbd
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with one critical link pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to 'google map api key android studio', suggesting a lure to disguise the malicious intent. The presence of numerous PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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=google+map+api+key+android+studio
    • http://rotenapof.saspruikle.com/uploads/1/3/0/7/130739430/2943932.pdf
    • http://files.ihsanedu.com/uploads/1/3/2/6/132681488/tomibakegovaloji.pdf
    • http://files.ihsanedu.com/uploads/1/3/2/6/132681488/tomibakegovaloji.pd
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/chappaqua_performing_arts_center_website.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/10158979418.pdf
    • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/40708630032.pdf
    • https://cdn.shopify.com/s/files/1/0437/8899/2674/files/organization_charts_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/55768120052.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/solirugunoxazaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4167/files/24429010022.pdf
    • https://cdn.shopify.com/s/files/1/0431/3579/5354/files/xovuterutozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6762/8950/files/40166439838.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.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_off00006bdf.bin
6a8efca3f55ed1ffc2df5cbc04312a8749f18e64702de023633fef899520dcf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 5356 bytes
font_01_sfnt_off00007e06.bin
be4bd63d121b561c9c93f0b4bda3e4960da48b5b0c4170a33077070f20971fa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E06 10112 bytes
font_02_sfnt_off0000a095.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA095 4324 bytes

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