Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea157c9fc3ad1a1…

MALICIOUS

PDF

41.5 KB Created: 2020-08-11 23:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7902f06cca8e721bd79d246c559ed2ac SHA-1: 34df7087a8da1da7bc90cef89a5fd88ed0c98695 SHA-256: 7ea157c9fc3ad1a1c22db7de2a36f37c2ad2d13ff5058f1f3dc03f4a344dfb76
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, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a PDF link farm, with many links pointing to Shopify-hosted PDFs. The document body itself is heavily obfuscated and contains the malicious redirector URL. The primary attack pattern appears to be SEO manipulation or distributing malicious content via a large number of links.

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=el+modelo+economico+neoliberal+pdf
    • http://files.thegiftoflifeproject.com/uploads/1/3/1/0/131070105/7978957.pdf
    • http://files.artfix.info/uploads/1/3/1/8/131871621/fudaga.pdf
    • http://files.joannzorzi.com/uploads/1/3/2/8/132814241/651ddc73a9788.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9977/files/75330445706.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/pocket_ref_4th_edition_glover.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/8663440734.pdf
    • https://cdn.shopify.com/s/files/1/0440/0224/6814/files/install_maven_mac_brew.pdf
    • https://cdn.shopify.com/s/files/1/0431/3205/9810/files/gatuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/33369607974.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/bureaucratic_culture_in_bangladesh.pdf
    • https://cdn.shopify.com/s/files/1/0446/6468/4697/files/agile_project_management_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/80004366833.pdf
    • https://cdn.shopify.com/s/files/1/0440/6670/1477/files/56773464826.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_off000064c4.bin
40eed21d9bf62a622200728308b0a82546587f3b2bc4b764dfc392376f992206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 5220 bytes
font_01_sfnt_off00007666.bin
e0f5d59b08795d087b9839ad89cb8f27f0752a25f5e8d0dd542b287190c217b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7666 10788 bytes

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