Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa6a67f5053db08…

MALICIOUS

PDF

50.2 KB Created: 2020-08-12 15:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e859e2fdef1bfe5dd500ca75c061e4 SHA-1: ee15ef5018b9d5e2912a9576321092940157f1b5 SHA-256: 3aa6a67f5053db088f20bc21f3e8013e4c59fdeb9df9af832342250d2340e16b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify, likely to obscure the malicious destination.

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/pify?keyword=assessment+in+special+education+a+practical+approach+pdf
    • http://files.cafeahuriri.net/uploads/1/3/1/1/131164324/sivatuxana.pdf
    • http://files.meridianelemptsa.org/uploads/1/3/0/9/130969194/087e4.pdf
    • http://files.joemillsaps.com/uploads/1/3/1/4/131409167/wunoni.pdf
    • http://xapigeja.his-info.com/uploads/1/3/1/4/131453028/8539858.pdf
    • http://fovulana.paws4change.com/uploads/1/3/1/3/131383771/dobirekalu.pdf
    • https://cdn.shopify.co
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/witudojoruwudarufef.pdf
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/94555869378.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/write_your_business_plan_book.pdf
    • https://cdn.shopify.com/s/files/1/0444/4097/7574/files/coordinate_geometry_formula_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/97928529191.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/27557228908.pdf
    • https://cdn.shopify.com/s/files/1/0433/7254/4150/files/call_flooder_program.pdf
    • https://cdn.shopify.com/s/files/1/0436/0064/2211/files/lajalekeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/4692959695.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/furupokexopaxabisovijuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1089/1680/files/2655703823.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000860f.bin
2ca0d7d8a98d3fa57f037f84513ce152524fb38bbfd0bcab3797a077ecd9ebe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x860F 5384 bytes
font_01_sfnt_off00009827.bin
fb6753359108ce5a65189ad8d860da0c53c4dd953ed1906fdd9715ad6a8d89d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9827 10180 bytes

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