Malicious PDF — malware analysis report

Static analysis result for SHA-256 7274b72ded04a202…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 08:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ee7969815e63f9df525a48d74db1c3a SHA-1: 7e92996df178f999d0d52a8e4f727a1484285e92 SHA-256: 7274b72ded04a202811fc2647401eba5ce72b72fa415d99f4e255584d97c7e5f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on Shopify and other platforms, suggesting a link farm or SEO poisoning attempt. One of the primary links, https://ttraff.com/wix?keyword=pmos+voltage+equations, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, indicating its likely purpose is to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=pmos+voltage+equations
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0451/1121/4245/files/18681281593.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1567/files/71254285233.pdf
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/92034179792.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/3339907533.pdf
    • https://static.usrfiles.com/ugd/74a852_ed40475a98b246c3bdf3674647e0cbd0.pdf
    • https://static.usrfiles.com/ugd/0d2908_9a89f818c6d449dcbf317b848151fed1.pdf
    • https://static.usrfiles.com/ugd/913720_76b2074f472045939b9834432329a2eb.pdf
    • https://static.usrfiles.com/ugd/aff7ca_6058da639a0a4e0783432f3d6bf8d41d.pdf
    • https://static.usrfiles.com/ugd/1c90dc_70aa97e46b5040f5b3724665cf03438b.pdf
    • https://cdn.shopify.com/s/files/1/0440/9357/1224/files/nibogizinepinolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/50799410216.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/map_of_usa_states_with_names.pdf
    • https://static.usrfiles.com/ugd/b8c837_8657dfc8d9494d70855fa76bb9c1a0e7.pdf
    • https://static.usrfiles.com/ugd/e6092c_f105d759818b40ed93bc3037738491fc.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e9b.bin
c49fad5a029efb5e1524ec524d58de55df34f0feab860573ab30e53e7eb9d839
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9B 5096 bytes
font_01_sfnt_off00007fe6.bin
1dc2cb6c652bfe2892079fdfa6bcba95721acd46c76df8b6dc0f02a65df848ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE6 9796 bytes