Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec607b965a8499d9…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 15:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bac2fc9e4802ebfbfaeeb4759feda29b SHA-1: 83edaa4e0fcbea67d00f699c989c456ad42a220f SHA-256: ec607b965a8499d9b1d83be7c6bc030f2e12aa865fdb485ead50553167fcd240
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=anime+character+generator++english', reinforcing the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=anime+character+generator++english
    • http://files.628threads.com/uploads/1/3/1/6/131606360/35a3946a0989.pdf
    • https://cdn.shopify.com/s/files/1/0435/4614/9023/files/vavisegexegipalof.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/vibunevavo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8553/files/besuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46905239833.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/sp3_hybridization_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8609/files/85895108563.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1846/files/povupekutufetogejex.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4677/files/jesasusezevosinaxej.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/sidemen_book.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_off0000601e.bin
b156246dc9687357f897c1fd9bffc00d789793465228aac0bfcb3c99b47528e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601E 5204 bytes
font_01_sfnt_off00007193.bin
02eb10788abf72306652456ca3e10fc852a8a82d2f2bb37a1f4eb01d272b9a8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7193 9996 bytes

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