Malicious PDF — malware analysis report

Static analysis result for SHA-256 9359f4898c448827…

MALICIOUS

PDF

35.6 KB Created: 2020-08-25 20:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bc53b868da05c9e10750d3653253239 SHA-1: 639bc083ae50d223fbfa1afdf8e41ad87ee104d0 SHA-256: 9359f4898c44882717fa724b0f661c107bc64696e6be0a7927cef50c8e51b1c7
120 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs. One of these URLs, 'https://ttraff.com/pify?keyword=para+salvarte+jorge+loring+gratis', is identified as a malicious redirector. The document body contains garbled text but also includes the same malicious URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lead users to harmful content, likely for phishing or malware distribution.

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=para+salvarte+jorge+loring+gratis
    • http://files.standupprojects.com/uploads/1/3/1/1/131163856/3c869aa.pdf
    • https://cdn.shopify.com/s/files/1/0439/0689/1931/files/physics_of_atoms_and_molecules_bransden_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/9392/3742/files/difudekeximunawuri.pdf
    • https://cdn.shopify.com/s/files/1/0435/3975/9259/files/vebodiligogo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0743/3125/files/fagopufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/47956578074.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9764/files/morazivozet.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/euler_hermes_group_sa_annual_report_2018.pdf
    • https://cdn.shopify.com/s/files/1/0464/7249/5272/files/hitachi_starboard_software_9._6.pdf
    • https://cdn.shopify.com/s/files/1/0443/5968/0156/files/b._pharm_colleges_in_tamilnadu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/todelabedaxebagajeja.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/sunulituzotuxezikoge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/83685298552.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_off00004f9c.bin
711627c4fc4ae2902e3af856b4a63a58607b95664afedc22b70291ec8ea2dbb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F9C 4988 bytes
font_01_sfnt_off000060b2.bin
4dbdbbc54d73cbabcb25ec062bebd997e473df902ef383463e06e9c4d849339b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 9764 bytes

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