Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7d8f60874b3a32…

MALICIOUS

PDF

43.5 KB Created: 2020-08-21 17:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da5dddb9ac6e5ce68d3b43bd1eff4095 SHA-1: 1616477192b53ed30eead8601841cb5f3df40656 SHA-256: 1e7d8f60874b3a328c9b949c981052a7a31bf7f4a305f8514fd277321277bb45
128 Risk Score

Malware Insights

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

The PDF contains a SE_INVOICE_LURE heuristic, indicating it is designed as a fake invoice or payment notification. It also contains a PDF_MALICIOUS_REDIRECTOR_LINK firing, pointing to the URL https://ttraff.com/pify?keyword=invoice+email+template+bootstrap. This suggests the document's primary purpose is to trick the user into clicking this malicious link, likely to download a secondary payload or redirect to a phishing site. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many pointing to Shopify domains, which are likely used to obscure the malicious redirector.

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.com/pify?keyword=invoice+email+template+bootstrap
    • http://xeradogus.adentausa.com/uploads/1/3/1/4/131437595/4fc2d90.pdf
    • http://files.deltatacticalknives.com/uploads/1/3/0/7/130776599/3296566.pdf
    • http://subizula.cfohb.org/uploads/1/3/0/7/130739540/rumemeriw.pdf
    • http://gabibaduj.petoskeynorthmenmath.com/uploads/1/3/0/8/130813528/bagedije.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/pofanidifivegopi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/venoropa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/60504595527.pdf
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/tobetavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/16246714809.pdf
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/gajunelapekamimowozara.pdf
    • https://cdn.shopify.com/s/files/1/0462/3869/5573/files/35983175789.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/sotudopigasubenakititar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9649/7573/files/vagafoki.pdf
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/nijupotadametenudu.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_off00006d36.bin
d3882b15a48422a5253a486728106d3d023340f26b0a3a64195f43621ef39ebe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D36 5216 bytes
font_01_sfnt_off00007ed0.bin
a48d65235a7401ca978770444a7c93e29670818bc942b16806441e6b72b2f096
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED0 10148 bytes