Malicious PDF — malware analysis report

Static analysis result for SHA-256 8891dca830371204…

MALICIOUS

PDF

42.2 KB Created: 2020-09-04 20:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 944f72c5ba2f2c18813700328d67b13c SHA-1: adbd1f5cec0db7e59dda6ed2a6ecadee350fcf42 SHA-256: 8891dca830371204de1c3adea8c4496d0908307e5233bf88237b6d7d4cd14897
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 'https://ttraff.me/wix?keyword=free+beat+instrumental+2017'. The document body, though heavily corrupted, contains text fragments that appear to be related to the lure. The presence of a link farm heuristic further suggests malicious intent, likely to distribute malware or conduct phishing by redirecting users to malicious sites.

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.me/wix?keyword=free+beat+instrumental+2017
    • https://static.usrfiles.com/ugd/6da380_b3e3ecedcd184d2eb7cdc8397724059c.pdf
    • https://static.usrfiles.com/ugd/9c0842_bc88718ca4c94457a81453c80d2db4f3.pdf
    • https://static.usrfiles.com/ugd/b85eb0_60f021913dc9450096e786724fe42c43.pdf
    • https://static.usrfiles.com/ugd/ea2f88_e9b33d3a387740e0a7d1d35e8b7c674f.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/1348762942.pdf
    • https://cdn.shopify.com/s/files/1/0438/4751/6325/files/steve_berry_alexandria_link.pdf
    • https://cdn.shopify.com/s/files/1/0430/5249/9098/files/python_get_current_path.pdf
    • https://cdn.shopify.com/s/files/1/0434/6131/2664/files/tadezazunabeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/freelance_photographer_contract_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0082/2934/files/voxudisepunavetedadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1857/5262/files/20117035351.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/mesolufexagofife.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/cancer_de_boca_tratamento.pdf
    • https://cdn.shopify.com/s/files/1/0433/6009/2315/files/1301787697.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/xafisakopadazu.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_off000065f6.bin
6e6fcae2008bac6186b0b14d728bdc84c7445536ff59b0211be23048a11c9cbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F6 5332 bytes
font_01_sfnt_off0000780b.bin
84ff8025250c0c4e5e4d22387849340d14dd8c34ee857a5ed33ecb0331686536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780B 10556 bytes

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