Malicious PDF — malware analysis report

Static analysis result for SHA-256 9654b5b3bc982ed1…

MALICIOUS

PDF

63.0 KB Created: 2020-08-31 07:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c513d84823835ea72f0ecde72eef1fcb SHA-1: b29fb74c529cda06557435b1c53ed1697fda0923 SHA-256: 9654b5b3bc982ed1f5d2fec336ed574aa1d3ba4d25ca1ac259e104abd9c73c92
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a significant number of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a direct link to a known malicious redirector at ttraff.com, which is presented as a download button. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests a social engineering attack aiming to redirect users to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=professional+responsibility+a+contemporary+approach+outline
    • https://static.usrfiles.com/ugd/b444d4_72cd94c8c6bc41aaa3f5d03597484e0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5458e4420894b33a049d23c8473a727.pdf
    • https://static.usrfiles.com/ugd/73c254_8cf8f46d2841452d9d6925de1afa1a2a.pdf
    • https://static.usrfiles.com/ugd/739437_9c2e044e9e7f4063a7e6c9be4d8fb362.pdf
    • https://static.usrfiles.com/ugd/b8c837_a644aabf54cd4891aee24555feb8c015.pdf
    • https://static.usrfiles.com/ugd/87a178_a939ce53db7e4a83b1409df2c80cbcf4.pdf
    • https://static.usrfiles.com/ugd/3e9e83_38590c83c6074a4a938f484230d245dc.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/2860039544.pdf
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/42280487134.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3595/files/spreadsheetapp._openbyid_bad_value.pdf
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/medicina_antroposofica.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/23133182484.pdf
    • https://cdn.shopify.com/s/files/1/0452/5424/6562/files/44371859758.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65107231385.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/50932749617.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_off0000b601.bin
9a377595ffce02162a690f88fdc71aee21f0d6c1ef54c2276fc0d6f2f6caa18e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB601 5496 bytes
font_01_sfnt_off0000c884.bin
917a87c7948a4e41b354d42aade3572506b76fb8c297f2b54ff9e75d2b04e352
pdf-font-stream PDF embedded font (sfnt) at offset 0xC884 11384 bytes