Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f1575c3be8e800…

MALICIOUS

PDF

42.5 KB Created: 2020-08-08 11:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47fd190e46b55bc13abd2d9667f5593d SHA-1: 7d12e8712e6d92681c0539b367fc1b9d0e545364 SHA-256: 59f1575c3be8e800be9345d8ba27199f4e5e1081d1149fec9b3cd7ef14deeff1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wb?keyword=aspectos%20de%20chopin%20alfred%20cortot%20pdf'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many hosted on Shopify. The primary intent appears to be luring users to malicious or potentially malicious sites through these embedded links.

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/wb?keyword=aspectos%20de%20chopin%20alfred%20cortot%20pdf
    • http://files.papolionetwork.org/uploads/1/3/1/4/131408970/siven.pdf
    • http://files.elena-uta.com/uploads/1/3/1/4/131453299/4062607.pdf
    • http://files.addisongraphics.com/uploads/1/3/1/4/131408245/4150466.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/50090942006.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/command_prompt_commands_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/34617385097.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebisineseboji.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/wavovixokogidowiza.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/gavoselabiwipasa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/govufol.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/winigoforogi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7837/5829/files/tezototemutudulowuloban.pdf
    • https://cdn.shopify.com/s/files/1/0441/1670/5432/files/44258922109.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3959/files/57622762049.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_off000065fc.bin
08a0340dc8f414da2c219274cb5e4cf3768cbe0f89c9d964440dacbd3733a94a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FC 5232 bytes
font_01_sfnt_off000077c5.bin
18f092e5e9dfb94e9110cd3aa295d9f0c42bf20eacdb0b6c0783245ecdf9dbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C5 10836 bytes

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