Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ae6b536cccd319…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 21:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f35758c49f9481844b8685301340fef SHA-1: fd222cd8b7af77f0895ca5a698ac1cf4fb70c68c SHA-256: f3ae6b536cccd319c2f498e3aa945ed29db19a7872d15b036882b14a5fd0a3ae
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=effects+of+stress+essay+pdf'. This suggests the document is designed to redirect users to malicious content under the guise of providing a PDF on stress effects. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO-based lure tactic.

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=effects+of+stress+essay+pdf
    • http://files.affordableinsurancedirect.com/uploads/1/3/1/4/131437724/zematonidatore.pdf
    • http://lazotemi.cancunrivieramaya.tours/uploads/1/3/2/6/132695306/pozupaje_fesosajaduti_zagagix.pdf
    • http://files.pkjoypoet.com/uploads/1/3/1/3/131383727/ec0b16.pdf
    • https://cdn.shopify.com/s/files/1/0434/6013/3031/files/using_apostrophes_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/gobav.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/63134939149.pdf
    • https://cdn.shopify.com/s/files/1/0432/3773/6603/files/79792185131.pdf
    • https://cdn.shopify.com/s/files/1/0432/2836/4968/files/77845645936.pdf
    • https://cdn.shopify.com/s/files/1/0450/4325/3406/files/bossa_nova_menu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4678/9542/files/flatland_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1438/files/19150886042.pdf
    • https://cdn.shopify.com/s/files/1/0447/8858/0512/files/ansys_workbench_18._2_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/vuvoneresifutivododi.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_off000072e6.bin
8fb93d78ca2eae6a38cc0a87e49383ad384bd668bb423ce7220f9c8414802349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E6 5176 bytes
font_01_sfnt_off000084a4.bin
f3217dad7da8d0708873b3d120f6b0b008f268ee5f31890d7ebbff2858f33a7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A4 10156 bytes

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