Malicious PDF — malware analysis report

Static analysis result for SHA-256 348aa5a76eac0704…

MALICIOUS

PDF

40.4 KB Created: 2020-08-06 22:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d5086b25c17f6a4a1f76e7bfff4ef5b SHA-1: 7eb7fe2d78476632eefb6d910ce4765ad937e627 SHA-256: 348aa5a76eac0704644de978b7e670beb75bfba979b173193fb2379c19d7596c
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate document downloads, but the primary link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains the initial lure text and the malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=fundamentals%20of%20thermodynamics%20book%20pdf
    • http://files.ambertennant1616.com/uploads/1/3/0/7/130739756/3820018.pdf
    • http://files.playtennismarin.com/uploads/1/3/2/7/132740462/5a52fd5.pdf
    • http://files.deborah-paul.com/uploads/1/3/1/4/131437157/dufam.pdf
    • http://nirof.chefscommissarykitchen.com/uploads/1/3/2/6/132696212/5016743.pdf
    • http://files.lyndalriley.com/uploads/1/3/1/6/131637498/8167253.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2506/files/canadian_citizenship_application_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5412/7521/files/wedding_guest_list_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/67251975939.pdf
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/usf_health._docugateway_com.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/9775089030.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/25601681509.pdf
    • https://cdn.shopify.com/s/files/1/0435/5509/4679/files/chez_nous_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/1150/4290/files/begageretewoponaviwepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/10482328401.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/karirixolumaja.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_off00005ff0.bin
842794e81285cfc1624a98a7d1dc245503fe8ea9743d1534132576ebbcba3c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF0 5656 bytes
font_01_sfnt_off00007304.bin
cd59d3e5fafe547c55f6713e86ccc468c5f335a8786b1b6c8c983e0e353a5250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7304 9832 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.