Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70c50153aa6c252…

MALICIOUS

PDF

43.3 KB Created: 2020-08-06 00:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c21ad55fba9129f4ad4732a2543623d SHA-1: e732a858d19a1387f0dfc6fcd4d95a4cdd8fd9bb SHA-256: e70c50153aa6c252ad4c6976fe050a109490e482be8c656ef9ffe2871b974723
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.ru'. This indicates a phishing or redirection attack aimed at leading users to malicious content. No scripts were extracted, and the document body is heavily obfuscated.

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.ru/pify?keyword=joint+venture+agreement+pdf+south+africa
    • http://files.twc408.com/uploads/1/3/0/7/130775652/xikelu_rumak.pdf
    • http://files.kazzrie.com/uploads/1/3/1/6/131636843/jawakekatepi-pisivulu-retajaweweji.pdf
    • http://files.ichistory.com/uploads/1/3/1/4/131437685/dcfd8.pdf
    • https://cdn.shopify.com/s/files/1/0428/7630/5564/files/rozegujeve.pdf
    • https://cdn.shopify.com/s/files/1/0438/9748/7512/files/20826763528.pdf
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/90891761877.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/causes_of_tuberculosis_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/49204674885.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/infinite_stratos_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/retipupobugonaxovexet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9754/6149/files/kuzutiboluri.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/sat_2_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/4737/9356/files/bejijofopekeriribejoledum.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/56653599900.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/30544731459.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.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_off000062b0.bin
2ecc94a7c0498b0f815e4b1dc00cd1cf531fb392b38ac568d171b4cdbb1f5b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B0 5584 bytes
font_01_sfnt_off0000759a.bin
435895c25811115a6e8efbeaf1d0fc788ab225c068a413c58be5554ba64ade0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759A 13336 bytes

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