Malicious PDF — malware analysis report

Static analysis result for SHA-256 c284cd249712f002…

MALICIOUS

PDF

53.3 KB Created: 2020-08-26 21:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45ef9329a0626dd8dfa71825f19aec5e SHA-1: 993355bf8941323394c81046413353bd5fed0ff4 SHA-256: c284cd249712f002b4952608eb674d2574de631cd3f743090df9b5b8c394690e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a deceptive call-to-action and a mass of external links, many hosted on Shopify, designed to appear legitimate. The primary malicious URL, https://ttraff.cc/pify?keyword=adobe+reader+dc+msi+installer, is a known malicious redirector. This indicates the document is a lure to download a second-stage payload, likely malware, by masquerading as a software installer.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=adobe+reader+dc+msi+installer
    • http://files.djpaulgoodyear.com/uploads/1/3/1/8/131871605/xuwapu.pdf
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/29534986384.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/nitasuxu.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/kuroge.pdf
    • https://cdn.shopify.com/s/files/1/0436/1401/1555/files/sasuru.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/alimentos_para_diabticos_e_hipertensos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/39901950784.pdf
    • https://cdn.shopify.com/s/files/1/0434/8916/5478/files/kobufurinab.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/xelusafoverefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/60416240177.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_off000076c8.bin
b9942fdfa9c0c278f89465eba37786d6e11ff9513ed5da1ff4df1f45ba201cc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 5216 bytes
font_01_sfnt_off00008860.bin
efff58b7d27a9e6d31b110e03d1f0d941e0ec36cf81afc37836910bb1801319a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8860 13340 bytes
font_02_sfnt_off0000b2e9.bin
9c47a8ecf7103172530608de19fa11afb8a035ab51042e9cb8c6809f09ebb189		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E9 16344 bytes

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