Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd13ede503502d9…

MALICIOUS

PDF

124.4 KB Created: 2020-08-09 11:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b15495247641781370d3043bb8b6db0 SHA-1: 119a262ef333a1065d27a1acf133ffe2e04ede06 SHA-256: 3bd13ede503502d966a09444a2649980033dca864337056b4e527b40030e39dc
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This indicates a link farm or redirection strategy to obscure the final malicious destination. The document body, though heavily obfuscated, contains the target URL, suggesting the PDF's primary purpose is to deliver users to this malicious site.

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=anesthesia+science+viva+book+pdf
    • http://vigipag.johnlarkin.me/uploads/1/3/1/6/131637881/9707092.pdf
    • http://files.greyfriarstutorials.org/uploads/1/3/1/4/131407668/069cd123816788.pdf
    • http://files.greenmtngeezers.com/uploads/1/3/2/7/132741555/8842802b.pdf
    • http://files.overbrookparkcoc.com/uploads/1/3/0/8/130814788/namano.pdf
    • http://files.viproulettesystem.com/uploads/1/3/1/4/131452858/reteli_wusubumutope_legemoj_muzuvudawogexa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/xazaxasasalelebuwoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/tobedulapokevid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/gazolex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/jumabomupajo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/6698094189.pdf
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/bojunekevukedemixegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/convert_to_dwg_autocad_2020_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/77311448448.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/75698081252.pdf
    • https://cdn.shopify.com/s/files/1/0440/0345/9230/files/59423389267.pdf
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/94718156000.pdf
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/romifode.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_off0001a0b7.bin
b351a620cf284a5a84c8394aaf7eef587b6d0afef19f6e5f5bd39c023c08a45e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0B7 5368 bytes
font_01_sfnt_off0001b301.bin
6891c5895f6e126881d137f9599d3532747165eca3c42ec8bfe11a803515c6a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B301 15976 bytes

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