Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4af0bfb14db2aae…

MALICIOUS

PDF

47.5 KB Created: 2020-09-03 00:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a2c22e0837d466f8c3d879e527c39c6 SHA-1: 256ab21a11554838beed1d570278a05509f47f84 SHA-256: d4af0bfb14db2aaeefe43f388fe2a3e25406992f61741ade9c34629c7d659f9b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. This suggests a phishing or redirection attack aimed at leading the user to malicious content. The presence of multiple links, including those hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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=isometric+transformation+translation+answers
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/sogikagorodujinimuxubarow.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/taxivepar.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/sickle_cell_disease_diagnosis.pdf
    • https://cdn.shopify.com/s/files/1/0432/6712/9504/files/auditor_general_of_alberta_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/nisawizexetijikadu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/82624206538.pdf
    • https://cdn.shopify.com/s/files/1/0432/7384/6947/files/jigopovovan.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/bksb_initial_assessment_answers_english.pdf
    • https://cdn.shopify.com/s/files/1/0440/4664/7446/files/xexuzunorivutuwunufaso.pdf
    • https://cdn.shopify.com/s/files/1/0435/5696/2467/files/26513816523.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4557/files/ansi_b16._5.pdf
    • https://static.usrfiles.com/ugd/041b56_12c716e030d84f7b9c05d1165998f42a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a099aa030a84d0eb09d07f9fefb500f.pdf
    • https://static.usrfiles.com/ugd/1a89c8_619c39f8d59d4a0bb82c7294207fc975.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_off00006474.bin
1c638b7f3db5f3530e16073827ce342bb2c412f09c897e488217401b478cb562		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6474 5056 bytes
font_01_sfnt_off0000759e.bin
770f6603b12eaccc729d206e1f955b117a930dcad8874facf9bc3b13cd836e98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759E 11252 bytes
font_02_sfnt_off00009b3e.bin
7647bf53591b6c3021e33935b62d73e9104f4c2ecf04e440c8d22808ac51819b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3E 16208 bytes

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