Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc92c5224c889e6…

MALICIOUS

PDF

44.6 KB Created: 2020-08-19 14:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85e9fbc7f3caa5411de2719139e35d37 SHA-1: d06ef18ad46b32d0f8d21ca05fca5f6fa7122443 SHA-256: 2dc92c5224c889e6de3cc89de78f68b4b455ac383452e74ba0403d9ddd6dadcc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site. Additionally, the PDF includes a link farm heuristic, suggesting it's part of a larger SEO poisoning or link distribution scheme. The document body, though heavily obfuscated, contains the same malicious URL and other URLs that appear to be part of a link farm, some of which are hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=proform+elliptical+trainer+7.+0+reviews'.

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=proform+elliptical+trainer+7.+0+reviews
    • http://zilivubo.maranatha-zomi.com/uploads/1/3/0/9/130969426/8043185.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/3394490677.pdf
    • https://cdn.shopify.com/s/files/1/0428/6221/5324/files/91480553096.pdf
    • https://cdn.shopify.com/s/files/1/0437/2994/4730/files/automatic_transmission_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1565/files/risevoritajojuwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1766/files/44112936550.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/24443940334.pdf
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/goxatasogupaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/bunojabazeba.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/72718698032.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/baixar_reader_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0449/8400/8862/files/resejubar.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_off0000605d.bin
246f856c49b94030696ec692c45b70b9505e94ea0ffa72cbf0eb09d92005d493		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 5356 bytes
font_01_sfnt_off00007285.bin
42fa1ac9062740252b37f5982b3d05cfda7eb852613e72c5a102c840b8b62127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7285 10804 bytes
font_02_sfnt_off00009783.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9783 4324 bytes

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