Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac01f65a3ee022e5…

MALICIOUS

PDF

38.7 KB Created: 2020-08-21 09:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6943359c16a737456e473a8a729f6e2f SHA-1: 8d6077d3cf6936401c8a2dc084ea87e5c52af3fe SHA-256: ac01f65a3ee022e5f0a39719707666d9f04dd8315b12982576e742f10d07c960
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'remittance advice template email' and includes a critical heuristic firing for a malicious redirector link. This link, https://ttraff.com/pify?keyword=remittance+advice+template+email, is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, some of which point to unknown or potentially malicious domains. 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=remittance+advice+template+email
    • http://sefex.ebrnhouston.com/uploads/1/3/0/8/130874254/welidepalofodarufiba.pdf
    • http://fabepamon.christoutreach.org/uploads/1/3/1/4/131407089/1bd5dac.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/standard_deviation_r.pdf
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/barney_playbook.pdf
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/gavedapeligurut.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/8293856861.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/fekif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4333/files/audacity_plugins_autotune_free.pdf
    • https://cdn.shopify.com/s/files/1/0448/9101/3275/files/juluvonijanibuketodoju.pdf
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/52585754384.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/memokisekosunemoz.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_off000059eb.bin
4fcb31ddee4c8d46bdf1abf85a85a57812c9f98eabfba737e4a5c815594354fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EB 5012 bytes
font_01_sfnt_off00006ae8.bin
7b3d27a2b6eeff39317349452ddf677b8dd30d332af0065baf028000ccca349f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE8 10320 bytes

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