Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1091f3e260896f6…

MALICIOUS

PDF

49.4 KB Created: 2020-08-20 01:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e457acb1a40d3cf229708ad74c7e906 SHA-1: e5793b63810f57d5760d2db0f6692afad6ee8bd1 SHA-256: a1091f3e260896f6e55813a4895a7c750be65d75230413cc67c898ecb67fef3f
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for "Java profiler free". The document also exhibits characteristics of a link farm, embedding numerous links to external PDFs, likely for SEO manipulation to increase visibility of malicious content. The primary intent appears to be directing users to malicious infrastructure via the ttraff.ru URL.

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=java+profiler+free
    • http://volutudep.luckyhobo.com/uploads/1/3/1/4/131406950/4333307.pdf
    • http://files.gapinteriorismo.com/uploads/1/3/0/7/130775649/gorug.pdf
    • http://zitugoma.andersrunesson.com/uploads/1/3/1/6/131636725/dikategilujev.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/sotinuvupipufuwitenufegom.pdf
    • https://cdn.shopify.com/s/files/1/0440/6080/3237/files/bienestar_socioafectivo.pdf
    • https://cdn.shopify.com/s/files/1/0461/4068/6489/files/ac_market_kinemaster_pro_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/tiwazebafumo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/26838267619.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/developmental_psychology_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/buggy_barracuda_plans.pdf
    • https://cdn.shopify.com/s/files/1/0452/2380/5079/files/mastering_the_art_of_french_cooking.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/97705577215.pdf
    • https://cdn.shopify.com/s/files/1/0452/5555/7280/files/research_paper_on_behavioural_finance.pdf
    • https://cdn.shopify.com/s/files/1/0437/1703/4134/files/1120698289.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/vusenexoxebilubo.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/1/0434/0174/0439/files/tiwazebafu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008278.bin
512534e9c5d2b368c4fcab13176e2c737059508c93da4a35df21a70134d89c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8278 4768 bytes
font_01_sfnt_off000092c3.bin
2028d3ce89b872d1ee9bf44c96d3f28d3ccd90953c8dd6c935994715749b7f42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 11144 bytes

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