Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1753cf840aa7d1…

MALICIOUS

PDF

33.9 KB Created: 2020-08-09 13:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffed84f94e7e7c8dc5a1e37be89a5add SHA-1: 95cf159fa3bc3790e7e0ffaa485e6c85d11d360c SHA-256: 2b1753cf840aa7d16448fa3a0c84c93dfe911bee8ebe2470d0f594755f4519a0
160 Risk Score

Malware Insights

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

The PDF contains a link farm of 30 external PDF links, with one prominent link redirecting through 'ttraff.cc' to a lure related to 'averitt express bol pdf'. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to copy and paste content into a shell, suggesting a social engineering attack. The primary malicious URL is https://ttraff.cc/pify?keyword=averitt+express+bol+pdf, which is likely used to redirect the user to a malicious payload or phishing page.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=averitt+express+bol+pdf
    • http://files.goalkeepersali.co/uploads/1/3/0/7/130776542/pegiluzugafod.pdf
    • http://files.uintahffa.net/uploads/1/3/1/4/131454816/mobobibupodak-wilovamulime-runizizaw-bipod.pdf
    • http://files.southerncrossdrivertraining.com/uploads/1/3/1/4/131438616/9f09f0e9.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1555/files/nibilewonogaduxax.pdf
    • https://cdn.shopify.com/s/files/1/0435/0171/5622/files/29347477313.pdf
    • https://cdn.shopify.com/s/files/1/0429/4482/3452/files/reactions_of_carbocations.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/nobikasolibikojukaxavofog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/61576206487.pdf
    • https://cdn.shopify.com/s/files/1/0430/1130/9719/files/13649205714.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdf
    • https://cdn.shopify.com/s/files/1/0434/5813/4168/files/filukanefibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/95065400919.pdf
    • https://cdn.shopify.com/s/files/1/0437/8833/7313/files/jikajelununawotasoxepoxaf.pdf
    • https://cdn.shopify.com/s/files/1/0446/7766/0825/files/alfa_laval_shell_and_tube_heat_exchanger.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/3585682900.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_off00004724.bin
1e6ee584d3631a3a5437e74694a42630855b4541318511b8f8263be73b7e2885
pdf-font-stream PDF embedded font (sfnt) at offset 0x4724 5080 bytes
font_01_sfnt_off0000587f.bin
66c492f3a4339b799f2f44516bff74a70d785e9b97072c09395f874d911d93ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x587F 10192 bytes