Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf337798f2a178c…

MALICIOUS

PDF

41.0 KB Created: 2020-08-29 05:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0327e95f14c58428adf162d27f8c55 SHA-1: 4409926e85b270765f7ecff9a49598707cb42f80 SHA-256: aaf337798f2a178c685dcdf3fde385237cb68ac7a96d2199bb2ac6a4328ccf4c
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 a link farm hosted on Shopify. One of these links, https://ttraff.com/wix?keyword=fonds+de+dotation+statuts, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL, suggesting the primary purpose is to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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/wix?keyword=fonds+de+dotation+statuts
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/59342976970.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4661/files/pepewajumuwitizilurina.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/moralibiwebolakivamudaxen.pdf
    • https://static.usrfiles.com/ugd/b8c837_766d50c1f1614583b851d51ddf05118f.pdf
    • https://static.usrfiles.com/ugd/b8c837_cdcc5e5dc1f647eaa89e30c9f4d76541.pdf
    • https://cdn.shopify.com/s/files/1/0437/4803/2666/files/58434011765.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/75861343381.pdf
    • https://cdn.shopify.com/s/files/1/0436/6336/0153/files/pre_op_total_knee_replacement_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/5663/4787/files/abiotic_vs_biotic_factors.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/71671710950.pdf
    • https://static.usrfiles.com/ugd/b8c837_48f77f2cf4a64f738f36d47e914ca929.pdf
    • https://static.usrfiles.com/ugd/b8c837_4aaee83269cd41b0a004663ce5331d96.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_off000060b7.bin
e50bbf1243364cd96f99d4ea7d82fefe0d9a59bb0798b817cc470b4be8f86ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B7 4644 bytes
font_01_sfnt_off00007096.bin
2acc94a7904491978b8e694865c1babd9844049ca9110efe51faeee3bc133cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 11980 bytes

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