Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d315e5cff6c037…

MALICIOUS

PDF

42.9 KB Created: 2020-08-23 23:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd47a6f2bb0013c8ca96e0ebb253c937 SHA-1: 2fd171e5bfd3353c299187f1e5baf970cc043391 SHA-256: d9d315e5cff6c03713d88559cc2863cb00a6ed85aa06c55b2b5fe695358d5f36
148 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and heuristics suggest a lure related to disputing a credit report, consistent with phishing or scam tactics. The PDF also contains a large number of embedded links, many pointing to Shopify, which is flagged as a PDF link farm. The primary malicious URL identified is ttraff.ru.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=dispute+your+transunion+credit+report
    • http://files.daydreamersinternational.com/uploads/1/3/0/7/130776451/milulinufasesex.pdf
    • http://files.huntersvillepres.org/uploads/1/3/1/4/131408203/ruzowap.pdf
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/28426498420.pdf
    • https://cdn.shopify.com/s/files/1/0448/9995/8939/files/18107239589.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/warononi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5672/5153/files/31489452632.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/53887273772.pdf
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/39686152566.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/tamil_movies_free_in_hd_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/81965219635.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/php_curl_post.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_off00006a97.bin
ae5b22ca3653d53c3c2fcb504c18fabf9a8c661129d591069b73ee57be071467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A97 5136 bytes
font_01_sfnt_off00007c22.bin
9f7ff6b817bfdfdfc4d7f4dc22812655f7e486d09335a0ba00ede1c02ec426ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C22 10176 bytes

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