Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48227220709d891…

MALICIOUS

PDF

33.6 KB Created: 2020-08-30 13:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b592c95daf8e2c8ad1c77609c7cc59f4 SHA-1: 623270b0aaa8f485e0687423d06420b024c17ffd SHA-256: d48227220709d89160cc39871a07163f573711e048babaf71ea2e2a6fd3ea023
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, indicating a link farm. The primary malicious URL identified is https://ttraff.com/wix?keyword=partition+piano+paris+seychelles, which likely serves as a redirector to further malicious sites. The document body itself is heavily obfuscated but contains references to the redirector URL and other benign-looking PDF URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=partition+piano+paris+seychelles
    • https://static.usrfiles.com/ugd/1c8c6c_060cfce2f9544b1d9d58da71fad3594a.pdf
    • https://static.usrfiles.com/ugd/ae15ca_6aba07d00b194ee6b6eb390e525c5d4a.pdf
    • https://static.usrfiles.com/ugd/eda9ba_1e3cd65e0b49484cb2970cbbe7cd7e5d.pdf
    • https://static.usrfiles.com/ugd/77eba6_d51332c21c964e329219b4b395bf1bcf.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc86ab8a4433493baa4009303d39af6d.pdf
    • https://static.usrfiles.com/ugd/99965f_c831f64fee5f400f82f26c1f93573af7.pdf
    • https://static.usrfiles.com/ugd/b8c837_da641bfb739c4c13890db8ffbc1f5b1d.pdf
    • https://static.usrfiles.com/ugd/1e4819_f0b6a43d4e334d29ab2df5e4ed0d5de1.pdf
    • https://static.usrfiles.com/ugd/a44510_e0f704513f1042e5b07ada249a117ae2.pdf
    • https://cdn.shopify.com/s/files/1/0440/8908/2006/files/45752235226.pdf
    • https://cdn.shopify.com/s/files/1/0440/0257/4494/files/73321426296.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/58717957301.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/aristophanes_biography.pdf
    • https://cdn.shopify.com/s/files/1/0449/4249/1816/files/real_time_labor.pdf
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/45580902108.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_off000045da.bin
0dfa3501a9bd71e3465dd144f68bc4ab240e3b033c03c5be42c3b76e6482bc87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45DA 5124 bytes
font_01_sfnt_off00005742.bin
927cb46507c522ae5d41f62af6f0c6fbbb4924d63d10af15daa318eec3d39779		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5742 10208 bytes

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