Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a73220cc184bb56…

MALICIOUS

PDF

43.7 KB Created: 2020-08-24 03:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be98ec515176055fbf8afca395cae737 SHA-1: 380146bd88c1d2770eb74b1040cdc03f985b38d9 SHA-256: 4a73220cc184bb5642381ba420502561542dbb6f419ab150580ec97a1c92e918
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting a lure to trick users into clicking. The presence of a link farm and a malicious redirector indicates an attempt to distribute further malicious content or conduct phishing.

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/pify?keyword=cateye+strada+wireless+manual+cc-+rd300w
    • http://xafewiz.alexrawfootage.com/uploads/1/3/1/6/131606289/4694009.pdf
    • http://kapoli.brokenspanishmarket.com/uploads/1/3/1/4/131437826/jativa.pdf
    • http://files.milightning.org/uploads/1/3/2/3/132303248/wiratepanev.pdf
    • http://files.anstrutherlifeboat.org/uploads/1/3/1/1/131164574/bomafivi-fovapit.pdf
    • http://files.sonoma-chanson.net/uploads/1/3/1/6/131637814/zekugev-tasagefolufepu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/vocational_skills_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/merge_command_line.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/87361214934.pdf
    • https://cdn.shopify.com/s/files/1/0450/1897/2318/files/1610329908.pdf
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/kejevabimufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/selling_skills_assessment_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/5873554830.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_off000068a9.bin
694b9cf00d0df661fd0c00e58ea5ba7692f49a59c90390d4cc8a3f4f8804bd7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A9 5520 bytes
font_01_sfnt_off00007b69.bin
6804cd4451dd37da0e56e0566834e6879592aa614cf902a2eaea4a9d0ecd423d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B69 11976 bytes

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