Malicious PDF — malware analysis report

Static analysis result for SHA-256 911dde217c676fcd…

MALICIOUS

PDF

43.0 KB Created: 2020-07-31 17:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f448c4ef8e35aeb3dcdbc92eae44025a SHA-1: e42b954a68e6e60b772f54340e33f9ebfcebde86 SHA-256: 911dde217c676fcda5bcd35451cdc0c7b71c354eb7254a2e918ee98d497eb45f
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, https://ttraff.ru/pify?keyword=directv+5+digit+codes, which is likely used to deliver a secondary payload. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the primary malicious link. The presence of invoice-related language further supports a phishing or scamming intent.

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.
  • 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=directv+5+digit+codes
    • http://files.cranageplanthire.co.uk/uploads/1/3/1/3/131398507/0d9ff4989a9953.pdf
    • http://files.jacdraws.com/uploads/1/3/0/8/130873728/daxokagowowotigize.pdf
    • http://files.texasredtoypoodles.com/uploads/1/3/0/7/130775557/wominon-gawexij-migizurusamolel-ziburetewurejij.pdf
    • https://cdn.shopify.com/s/files/1/0429/5743/9129/files/17124698344.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/45302448242.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/dalepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4996/files/nuveriwejokogudoleliwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/51160781574.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/53961402609.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/72376963489.pdf
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/jutefadaruvuxamadotomeda.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/xadakuzigasiluvo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/pumajuduwetuvonujona.pdf
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/zigileberi.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_off00006b03.bin
35d8e24d7f5210f2ae1a02f73c899f5822676f56a8cd3e8b2440b35a315c8927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B03 5048 bytes
font_01_sfnt_off00007c54.bin
bb45cb1de46769e256c790ccda5a5801d5cef57bb1007e65840cfa2738285fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C54 10336 bytes

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