Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32b91710c92c2dd…

MALICIOUS

PDF

43.1 KB Created: 2020-08-30 18:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff4793ea6c99bfb309edc8bb7f801047 SHA-1: 719440b879165209ea45a54fc9c5dcf3a7268c1c SHA-256: f32b91710c92c2dd3d7be3303ebf680aa1776eeabd2b21bcec1602ca97605e36
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.club/wix?keyword=teoryang+formalismo+halimbawa', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other links hosted on platforms like Shopify indicates a strategy to obscure the malicious destination and potentially leverage benign-looking domains for distribution.

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.club/wix?keyword=teoryang+formalismo+halimbawa
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/pusotadupidinuwogisoful.pdf
    • https://cdn.shopify.com/s/files/1/0440/8236/4566/files/47717389972.pdf
    • https://cdn.shopify.com/s/files/1/0435/7544/3615/files/acoustical_engineering_harry_f_olson.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/manualidades_para_nios_de_2_a_3_aos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/sutaretipusenipano.pdf
    • https://cdn.shopify.com/s/files/1/0462/4030/1216/files/ireport_plugin_for_netbeans_8._2.pdf
    • https://static.usrfiles.com/ugd/fd3290_969d803a44dc4201abf400545bd6b5a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c158ba2cfbc04189b35daf60ae48f1cc.pdf
    • https://static.usrfiles.com/ugd/345929_86adce65b52942fcac0fc602b692c741.pdf
    • https://static.usrfiles.com/ugd/b65acf_ec925a3244e14b6596b8c956ca098342.pdf
    • https://static.usrfiles.com/ugd/078c79_168efd158f484ff884feea22548498ec.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_off00005c2d.bin
18814a57673f386720038d0e457b39fd6acb22e88fed7249535edc591da29ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2D 5172 bytes
font_01_sfnt_off00006da7.bin
e0ed86cfc68be63182bcdd9f7f3ddfbb9579d6d9fa96177f2576d5e0346a45a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA7 9956 bytes
font_02_sfnt_off00008fb8.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB8 4324 bytes

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