Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ebe87eb5326bcf…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 05:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7230561ea97a1c4f0649b3469d2eb2f0 SHA-1: 679bf3d2b699f856a0c895ac43a648edd3461ffc SHA-256: e4ebe87eb5326bcf1e98f3278c9c03c956a3e4c698adc5eceaf184ad7b3cc95e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though partially corrupted, contains the same URL and text suggesting a lure. The PDF also exhibits a link farm behavior, with numerous external links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.cc/pify?keyword=non-+conformance+report+example', which is likely used to redirect the user to a malicious site.

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/pify?keyword=non-+conformance+report+example
    • http://files.honour-our-troops.org.uk/uploads/1/3/0/7/130776852/b375fde60b5621.pdf
    • http://pikoxu.raw-angling.co.uk/uploads/1/3/1/4/131482962/6609969.pdf
    • http://files.poomah.com/uploads/1/3/1/4/131437655/6098832.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/email_format_validation_sql.pdf
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/57961994275.pdf
    • https://cdn.shopify.com/s/files/1/0436/1447/0302/files/57937491206.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/27168117802.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/50079456012.pdf
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/59415600396.pdf
    • https://cdn.shopify.com/s/files/1/0429/2735/8115/files/mobutuwenijon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/positive_affirmations_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9107/4976/files/39385368034.pdf
    • https://cdn.shopify.com/s/files/1/0437/8030/9141/files/basketball_score_sheet_excel_fiba.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3141/files/36184112359.pdf
    • https://cdn.shopify.com/s/files/1/0452/1220/5216/files/abstract_noun_list_a_z.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_off0000646c.bin
c8ab5f1d5660c88f4dd525a8ec9822e09a3d95ac8963865c1710e1fea16b4d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646C 5052 bytes
font_01_sfnt_off0000758e.bin
2a412663ca025e60fb8ddffd682b241e701c71d3fa496f4d28bc457b122aa4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758E 9848 bytes

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