Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b8645c11ef9b8a3…

MALICIOUS

PDF

40.6 KB Created: 2020-09-18 05:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5d0ccd4c9f23bf76c4a3bd1f0dbc469 SHA-1: f7a2a7a046cd1ce3037c54567729ae39d09aa5e6 SHA-256: 2b8645c11ef9b8a364530953179fef453463474c606bada58fc4c613b22268eb
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO poisoning or to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.link/wix?keyword=el+paso+county+warrants+list+2019'. The document body, though heavily obfuscated, contains references to 'el paso county warrants list 2019' and other URLs, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/wix?keyword=el+paso+county+warrants+list+2019
    • http://files.shackboldon.com/uploads/1/3/1/8/131856186/sikufa_xefowoxejegi_pikikiletedemo_mosikonetuju.pdf
    • http://files.nepreserveco.com/uploads/1/3/1/0/131070362/8937778.pdf
    • http://files.sherieunfiltered.com/uploads/1/3/2/8/132815961/a59b4b501cc8.pdf
    • http://rimajafoj.techteaching2.com/uploads/1/3/1/4/131406286/9378774.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/61915376345.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/69160154635.pdf
    • https://60d3c0ca-bdd0-4419-bd2a-8e79d9e24af7.filesusr.com/ugd/0d089b_2695a1795cfe4d3886185fc084cd0365.pdf?index=true
    • https://ae056d70-8411-41c7-8cad-8ff2f16913a5.filesusr.com/ugd/17beed_502e367b08e5485d8695f60ab6b967a8.pdf?index=true
    • https://00410387-e52d-4571-a622-aa24e02c0e83.filesusr.com/ugd/dcbeda_513977b60e304685a2cac22e6dfeda2d.pdf?index=true
    • https://f6fe6cf7-d741-4fae-8fe8-eef6b44a62f8.filesusr.com/ugd/866690_27bafcd0b4254b66a6ef96dba938fc29.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/27807241986.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/25685674825.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/75617344955.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/46376019481.pdf
    • https://cdn.shopify.com/s/files/1/0437/8728/8738/files/ahista_pankaj_udhas_song.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_off00005d4b.bin
057403d0e0460e67c37f9cac2aeef3dd9732e3a3c4c6435bb3309b40068ebea9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4B 5560 bytes
font_01_sfnt_off0000705e.bin
cae5aee73f057c703e9e6600bb7c167bb7bc607d878ee1b4229b39e3728930b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x705E 10888 bytes