Malicious PDF — malware analysis report

Static analysis result for SHA-256 97468aff6e828a28…

MALICIOUS

PDF

126.6 KB Created: 2020-09-18 20:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 465eb2d8a8bbc2731a43c41d9aff091b SHA-1: 11dbcb996778701b96f4b1bece00b4f0025fb244 SHA-256: 97468aff6e828a2856dcbbc3f0dd0b0f6fa095dacae2eab95eab56d05def94f7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains obfuscated text and a URL that matches the malicious redirector, reinforcing the phishing lure.

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.cc/wix?keyword=glencoe+science+biology+the+dynamics+of+life+answer+key
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/xumonumiramiwataw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/familia_cathartidae.pdf
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/rushcard_direct_deposit_calendar_2018-19.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7644/files/92501016899.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/soref.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8286/files/40946507298.pdf
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/81294016229.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/nejife.pdf
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/64780507566.pdf
    • https://cdn.shopify.com/s/files/1/0435/9536/6559/files/five_membered_heterocyclic_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/24349393098.pdf
    • https://0bcbceab-0057-40b8-873c-a17f637200f1.filesusr.com/ugd/03a576_038718d4c6e641b7823046bbd7700ecc.pdf?index=true
    • https://999f3ba6-09c1-41d7-9000-1ab967b3c46e.filesusr.com/ugd/136d07_fc0a04f733534100b20e744e9d9cea15.pdf?index=true
    • https://f9c592f7-c2d9-412e-8573-62f5139ae2d9.filesusr.com/ugd/cc089a_e1180c7646d04e629013fa8716a65a19.pdf?index=true
    • https://7c608012-659a-4418-aaf8-c7f01c703010.filesusr.com/ugd/ee9d3f_e57a1940e813412bae0fdf4d47d94158.pdf?index=true
    • 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_off0001b160.bin
ff8e7ea2bb0123cb693444ef6720a41cfd6f79ddca491ec0d6a5f48b5672d8c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B160 5864 bytes
font_01_sfnt_off0001c54a.bin
23260271b3b0d81fb8240a09d9a1a60899427f9f7ff0199071fd9405cb6dff9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C54A 11284 bytes

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