Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff20dfd08a5fff5…

MALICIOUS

PDF

44.9 KB Created: 2020-08-08 07:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ec9ee6e80638464085a37dc5398b6fc SHA-1: e0b4d0dc2ab0f5afe905933fdeb1a47de7aa9d4d SHA-256: aff20dfd08a5fff50f88ce99cb40fa04a3654fd17486b7666f5b57e92ddbc520
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link identified is https://ttraff.cc/pify?keyword=aeration+tank+design+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, also contains this URL and other links to shopify.com domains, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites.

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.cc/pify?keyword=aeration+tank+design+pdf
    • http://files.daphedillsphotography.com/uploads/1/3/1/4/131438180/8355601.pdf
    • http://files.printer-graphics.com/uploads/1/3/1/3/131380297/xidoliboluto.pdf
    • http://files.revivetheroxy.org/uploads/1/3/1/3/131379477/8959138.pdf
    • https://cdn.shopify.com/s/files/1/0439/7708/0990/files/heroes_fighting_games.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/janikusenerovefijokadi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/bopapanugosu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8961/7311/files/24062913250.pdf
    • https://cdn.shopify.com/s/files/1/0436/8593/7305/files/novaxobilis.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2214/files/sarazebuvulemimugego.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/78976527724.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/68177365253.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/51422380962.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/cricket_score_sheet_pdf_blank.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/57895561145.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/zoxupisivagobuseda.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/franklin_planner.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_off00006479.bin
7988c7ea0e0d70c6b9e69eb46bfa40ebfaf16add4796d69d3e686fcb70ababdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6479 5020 bytes
font_01_sfnt_off00007597.bin
79ccb95523295dea318728225f51d0e8f13078a6d9c05db2dfe267a3bc6455e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7597 10308 bytes
font_02_sfnt_off000098d3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x98D3 4324 bytes