Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9c4f311d5d23a0…

MALICIOUS

PDF

39.8 KB Created: 2020-09-01 10:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84a33b80e291588c8a9f57c1dd7dbea1 SHA-1: 78227fbd25d4d37b8bd6194edf8ce0d90fafdfdf SHA-256: fe9c4f311d5d23a04d7c37e4b82d68df5413143b1422677f55adc16e50b949df
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=progressive+web+app+templates+free'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF files, suggesting a lure to trick users into clicking the malicious link.

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.me/wix?keyword=progressive+web+app+templates+free
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/china_visa_application_form_tanzania.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/xegedidasiganor.pdf
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/best_android_emulator_mac_2019.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/72191153061.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/gotepitupoguzalepubij.pdf
    • https://cdn.shopify.com/s/files/1/0430/0711/5423/files/2314140625.pdf
    • https://cdn.shopify.com/s/files/1/0433/0242/0644/files/19648460323.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/75787485618.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/amphioxus_characteristics.pdf
    • https://cdn.shopify.com/s/files/1/0454/6166/7992/files/google_spreadsheet_sumif_two_conditions.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_off00005cc8.bin
4290abbfec90bee15745a6706aa062bbd0e18770475b37a18d69726a2d449208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC8 5512 bytes
font_01_sfnt_off00006f89.bin
195408f0699f3bc4352cd4a0b78502efd4b7b70402769061f901090f599b20ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F89 10260 bytes

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