Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a790f82db7b089b…

MALICIOUS

PDF

41.1 KB Created: 2020-08-24 21:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be7a37cedc65979aa160db2e059843be SHA-1: aa87099025dacb6e6484dbd6f41231dcbb5f8c31 SHA-256: 9a790f82db7b089b5f3e1bc015996a19e33aec6289234fae3e01c7db33b5059c
180 Risk Score

Malware Insights

MITRE ATT&CK
T1539 Steal User Data

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm designed to obscure the true destination. The document body explicitly requests sensitive information like recovery secrets or private keys, aligning with the SE_SECRET_RECOVERY_LURE heuristic. The primary malicious URL, https://ttraff.ru/pify?keyword=run+report+as+logged+in+user+salesforce, is likely part of the initial lure to trick users into divulging credentials or other sensitive data.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=run+report+as+logged+in+user+salesforce
    • http://rajitufu.tournoidevignoles.com/uploads/1/3/1/3/131378779/somesaretujegim.pdf
    • http://files.tombuckland.net/uploads/1/3/0/8/130874501/rajifemafisa.pdf
    • http://xolos.csno-sdi.org/uploads/1/3/1/4/131437544/5340323.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90067119925.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/jipiwineb.pdf
    • https://cdn.shopify.com/s/files/1/0460/5791/4523/files/xotuzogasaxilar.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/3793774606.pdf
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/41354623650.pdf
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/joberajegazuzapot.pdf
    • https://cdn.shopify.com/s/files/1/0464/7256/0790/files/ratamoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/ata_100_chapters_list.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_off0000622c.bin
b066b633b710efd4e19c61f961d12d2fea5f4e5068cdf51d4951df62e1cd38ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622C 5328 bytes
font_01_sfnt_off00007459.bin
f587dada22c64c26360184d5d162fbf21aa6d21558cdc5809d1bdbd8a56f8572		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7459 10404 bytes

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