Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b63e0559c80f98…

MALICIOUS

PDF

36.8 KB Created: 2020-08-29 23:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d32ad60bbc8feec9773a3c73fd6d12f SHA-1: 4ab40143b5c987d47d19ef3b3a95507708aa2e28 SHA-256: f9b63e0559c80f98a87651a85191de2a19c914c1c7c44caaab851afe958cd140
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which are presented as book titles. One critical heuristic identified a malicious redirector link, and another flagged a link farm structure. The primary malicious URL is https://ttraff.cc/wix?keyword=physical+biology+of+the+cell+2nd+edi, which is likely intended to lead the user to a phishing or malware download site. The document body contains garbled text but includes the malicious URL and several Shopify links, some of which are benign.

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=physical+biology+of+the+cell+2nd+edi
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/femoluz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/85392614893.pdf
    • https://cdn.shopify.com/s/files/1/0440/6863/4789/files/definition_of_good_health.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/libuxedipi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/the_mummy_returns_online_hd.pdf
    • https://cdn.shopify.com/s/files/1/0438/8959/0427/files/personal_income_and_expenditure_template_excel_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/android_os_for_blackberry_q10.pdf
    • https://cdn.shopify.com/s/files/1/0465/0536/1566/files/vmware_workstation_15._5_update.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/karowodaxefoxapu.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_off0000516e.bin
fb9324be84929ed8eb5988e610ad923c4ad10ecb0848bfd22ce7aa28040adc64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x516E 5560 bytes
font_01_sfnt_off00006449.bin
8d40fa9bb892df41d57b41f202b0f1893aee31955fd0ef26333881d378484fde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6449 10124 bytes

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