Malicious PDF — malware analysis report

Static analysis result for SHA-256 8efe179a6a71b61f…

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 23:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 529ebaa84811d1df1ff17357fe31bf42 SHA-1: 7f5a4d4336191c9cc943cceab226b7ef420d0aef SHA-256: 8efe179a6a71b61fa2ec908a166b6fd3e750006ba7e69ea566214ebeeb3dce50
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or content hosting strategy. The primary malicious URL identified is ttraff.com, which is flagged as a redirector.

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=operacion+con+monomios
    • https://cdn.shopify.com/s/files/1/0440/3704/6422/files/jifig.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/cabg_procedure_steps.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/13649305976.pdf
    • https://static.usrfiles.com/ugd/1decf9_67ac9cd98a1c450991c266f77bf1ef83.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d089fc0ad8e456caa0a9e5e7193cf6c.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/92680035960.pdf
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/pudusexojamusavibar.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/bncc_lingua_portuguesa_ensino_fundamental_2.pdf
    • https://static.usrfiles.com/ugd/430cb2_12a5972f555a4343a2449c984626753d.pdf
    • https://static.usrfiles.com/ugd/c618e9_51ee5384186541beb44421ed37afcba0.pdf
    • https://static.usrfiles.com/ugd/b8c837_59965bdf522444e5b9e353ee2b260a8d.pdf
    • https://static.usrfiles.com/ugd/77d535_c7decf94f47a4471b0893e7f0167375e.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_off0000691b.bin
6ac90aaf105aca66e6fe57b5643150b6c268901f248c0775abd7da9baeba207f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691B 5076 bytes
font_01_sfnt_off00007a39.bin
ca89ceaedd79b60aacdbed3cd8d4d79eac89f0274f6553708c7bf28aa67beb9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A39 15064 bytes

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