Malicious PDF — malware analysis report

Static analysis result for SHA-256 204f5709e5c490ab…

MALICIOUS

PDF

50.7 KB Created: 2020-08-02 10:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f3af981b7b768bbc27164b06c13bf53 SHA-1: 8f059ddb3e6b975b1be91bd94763545c8eba5b5d SHA-256: 204f5709e5c490abd60bbc62552cde942a10b4140a98962715132d5d30a44f8f
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'how to install selenium python', likely a lure to entice clicks. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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=how+to+install+selenium+python
    • http://files.maybrittohman.com/uploads/1/3/1/4/131438844/3919569.pdf
    • http://files.dinahendrixrealtor.com/uploads/1/3/1/4/131408942/e590ab1.pdf
    • http://files.sophisticatedstyles.net/uploads/1/3/1/4/131453111/1191245.pdf
    • http://files.antoniosajid.com/uploads/1/3/1/4/131409244/2c919441f45.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/12365550776.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/dapowulokuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/15281864180.pdf
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/32476189320.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxoku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0436/9773/3787/files/word_perfect_veiwer.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/daritazigefodowofira.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/37975474321.pdf
    • https://cdn.shopify.com/s/files/1/0431/0961/3725/files/ruxus.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/82988483230.pdf
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/42017302033.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/gasifemezurunexiborigoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007101.bin
034807636b450bdd0fd712091b8185608c1920b07c1f574589d393975b9e5da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7101 5120 bytes
font_01_sfnt_off00008258.bin
2f612854560fd560dc7752b8302d937bf4a174a6e469c38b1779427e36767f34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8258 10616 bytes
font_02_sfnt_off0000a6d2.bin
3f51019d168cc315d32a1cdec8c1502cea85ba794e0e97ad6ce33f8d187b8d6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D2 16476 bytes

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