Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d689bd5773fb7b7…

MALICIOUS

PDF

40.6 KB Created: 2020-08-04 13:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7568939e3fa2991b9be0734077b5fae4 SHA-1: e3ce20c48a77b78ee25e137de8ce3dfb3b2b91bd SHA-256: 7d689bd5773fb7b79d5dd6fb4ab88cf31d2208229c15c9b5b0633ebc9effab4e
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, directing users to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ikea+kitchen+cabinet+sizes+pdf+uk, which is known to lead to malicious infrastructure. The document body, though heavily obfuscated, contains references to IKEA kitchen cabinets, suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the PDF structure itself is used for the malicious redirection.

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/pify?keyword=ikea+kitchen+cabinet+sizes+pdf+uk
    • http://files.westerncanineacademy.ca/uploads/1/3/1/3/131383664/lobop.pdf
    • http://files.aquestforhealthandpeace.com/uploads/1/3/1/4/131452794/26cd6b0.pdf
    • http://files.dunsmuirdeerhounds.com/uploads/1/3/1/4/131437254/ca0826ef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/saperarudividomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/6143623684.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/13171416299.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/dollar_general_drug_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/50251512898.pdf
    • https://cdn.shopify.com/s/files/1/0438/5210/3842/files/72861548345.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/53298155828.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/guwarozani.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/41587542176.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.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_off0000606d.bin
e391521cf0116e3ad33e4388c6720d9a8011c882a261363d8265344c0bbaa48c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 5308 bytes
font_01_sfnt_off00007285.bin
413b71ceeef403f83aa8ee7c3fd30256f70e85d89b9ce8fc0edc35879ed4a0d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7285 10368 bytes

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