Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddef28daaec6c2d2…

MALICIOUS

PDF

95.7 KB Created: 2020-09-03 07:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c297df1099bfae055a42fa4aaaa48b69 SHA-1: 3425e283a5be433c8400ae540081b42e1f7e8455 SHA-256: ddef28daaec6c2d2da983c6b75425ccf0f7c9c3d5c7c920c94ed5ee50a303e9f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=fwd+takaful+berhad+annual+report+2018'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning tactic. No scripts were extracted, but the malicious URL is a high-confidence indicator of a phishing or redirection attack.

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.link/wix?keyword=fwd+takaful+berhad+annual+report+2018
    • https://static.usrfiles.com/ugd/c7ef1a_ea07dd97147f43ed96f1c09acf2be23e.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_7973d50acde8436f817485a5531bb8de.pdf
    • https://static.usrfiles.com/ugd/8aba0c_c2befea74c3040fcab918a314e91e6b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6150c041ccb4345925c5fd6b6871249.pdf
    • https://static.usrfiles.com/ugd/b8c837_20cc7e4667424dc59be3dfd229417251.pdf
    • https://static.usrfiles.com/ugd/eb5a6a_ebc7308548144733982fc839c9a8f1be.pdf
    • https://static.usrfiles.com/ugd/b8c837_132eb013f89043e59db09a7000f93195.pdf
    • https://static.usrfiles.com/ugd/ec0c41_63388ff445e44865b496c16c9d349bf0.pdf
    • https://static.usrfiles.com/ugd/b910ae_853335062ae448f1afa5123b0f56604c.pdf
    • https://static.usrfiles.com/ugd/dd4472_809ff88370af4362b765d64da0494054.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/vuzumapudawe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/26493977889.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_off00012c78.bin
f67cd74788be1f985472b19d39dba410d8f362129181e74ceeb902a05f540d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C78 5724 bytes
font_01_sfnt_off00014009.bin
8841c5316a08901b563bdf42ae0635e1e7d09f8d4e8c206800438bff7c37eac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14009 16268 bytes

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