Malicious PDF — malware analysis report

Static analysis result for SHA-256 22660b9afc651f66…

MALICIOUS

PDF

50.5 KB Created: 2020-08-23 07:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 937ed601c5ddb70b474b964ac7052f27 SHA-1: 8420c00bbcbd68a430029085d83522f03bae170e SHA-256: 22660b9afc651f665a424935869f2bdeef29396c1376c6d41cbc194e52d1d4b1
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. This indicates a phishing or redirection attempt, likely to deliver a secondary payload or lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the final 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=sample+budget+spreadsheet+for+college+students
    • http://files.centertowndfw.com/uploads/1/3/0/7/130738568/82af2a1180f2.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4700/files/88954491117.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/gate_agricultural_engineering_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/tibukiduxevixejokuzovu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/catia_v5_macro_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/89557762992.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/40564083872.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/wuweburox.pdf
    • https://cdn.shopify.com/s/files/1/0435/2439/1071/files/messenger_lite_apk_version.pdf
    • https://cdn.shopify.com/s/files/1/0447/2055/4138/files/43518042604.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_off00007945.bin
e0dfd7ee5d3c1c8f7b52127b55a4cfe61aecc7a957c267def132cbee956d3a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7945 5648 bytes
font_01_sfnt_off00008c44.bin
1fd7f18df682336ecc86e559900fd1fe012ff0bdfabbd461c5bd1b826d0f0789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C44 10072 bytes
font_02_sfnt_off0000aeb1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB1 4324 bytes

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