Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ee36eda1ce149f…

MALICIOUS

PDF

50.0 KB Created: 2020-08-31 03:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bd2baf0460a9e4a7030b53fcadc3bdc SHA-1: d444a5316a1d8e64b53c7ff9c030338f98144b4e SHA-256: a2ee36eda1ce149fcc825973a55f0a9e668ed5d4e4ebab9372e5b3858b568b56
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=ic+engine+fundamentals+heywood+free+download'. This URL is likely used to lure users into downloading further malicious content or visiting phishing pages. The document also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs hosted on shopify.com, suggesting a tactic to artificially inflate search engine rankings or distribute content through a seemingly benign platform. No scripts were extracted from this sample.

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=ic+engine+fundamentals+heywood+free+download
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/xosifutosupiniw.pdf
    • https://cdn.shopify.com/s/files/1/0450/4325/3406/files/warhammer_40k_mechanicus_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7308/5341/files/17329166441.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/tadodumusepelu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/jurnal_bagian_bagian_bunga.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/goxixaxid.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/importance_of_arusha_declaration.pdf
    • https://cdn.shopify.com/s/files/1/0433/4944/2715/files/fallout_76_water_purifier.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/dejodurawegafidigog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4048/9122/files/lafisonelekimojigaxuxama.pdf
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/grim_dawn_leveling_guide.pdf
    • https://static.usrfiles.com/ugd/b8c837_a83db85a2edc43d598673373dc4a5f16.pdf
    • https://static.usrfiles.com/ugd/b8c837_446b3853681d4ffa8a5fb538553834d4.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_off00006da7.bin
85ff3b1772c152873fb6dc2b796ca3b105eb028cf197cf13bb2bec5b57d8ffe2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA7 5568 bytes
font_01_sfnt_off00008074.bin
49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640
pdf-font-stream PDF embedded font (sfnt) at offset 0x8074 2116 bytes
font_02_sfnt_off00008a3f.bin
53613714d12240b8d2701ef37695e843d0c205cce3700fe442a629dda3c11ec9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3F 15736 bytes