Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fd8d8c4e21f474…

MALICIOUS

PDF

69.1 KB Created: 2020-08-29 11:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bbd09837792c5025aefc328ceec163f SHA-1: c2fde0e9d22db1ebbca88a9b1acdadb9b689d159 SHA-256: a4fd8d8c4e21f47445f712f19a9d54374da8b06970a4037a67194d503412518c
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary malicious link is presented as a 'complete piano chord chart' to entice clicks.

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=complete+piano+chord+chart
    • https://cdn.shopify.com/s/files/1/0438/9437/4555/files/zibalijilosijafifodositax.pdf
    • https://cdn.shopify.com/s/files/1/0448/4559/6834/files/sefiludomazejigufun.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/verifone_vx520_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/hazardous_waste_management_act_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8882/2950/files/fugiwafejimikudenajef.pdf
    • https://cdn.shopify.com/s/files/1/0458/0707/5494/files/el_arte_de_amar_libro_michalina_wislocka.pdf
    • https://cdn.shopify.com/s/files/1/0433/8188/3047/files/pibasogige.pdf
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/5429727153.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/mexopofemum.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fe2d47b42b848adbcad04c0161ee2d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_79cab8e5a91d41239a55abe7be259bde.pdf
    • https://static.usrfiles.com/ugd/b8c837_91508e7358304576842ae55e365186eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b64321fb6f74112a42e3d4f6a2e3b9a.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_off0000aedf.bin
01ff49415c93613e9519c789e49cc60a88f5d7fb95cc327c8693d16816cdf280		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDF 5040 bytes
font_01_sfnt_off0000bfc3.bin
d01ebe494c9ce150a801d6e37011f90f5371b125f866e6d048b1563d13f0c1d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC3 15692 bytes
font_02_sfnt_off0000f046.bin
46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF046 16120 bytes

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