Malicious PDF — malware analysis report

Static analysis result for SHA-256 612622fb6df507f1…

MALICIOUS

PDF

42.7 KB Created: 2020-08-30 11:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80711aa3c2225652b89caefd9a9abe55 SHA-1: 54b17ee9cbbe1015b92755d603224f662e178ad4 SHA-256: 612622fb6df507f166a3de9bf30ae40c911ae734aab84d1b70d249c3f5049170
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/wix?keyword=mixcraft+8+free+download', is flagged as a malicious redirector. The document body also contains this URL and other links, suggesting a lure to download software. The presence of multiple external PDF links, some pointing to benign Shopify domains, indicates a link farm strategy, likely for SEO manipulation or to host further malicious content.

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.cc/wix?keyword=mixcraft+8+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5189/2381/files/55338050362.pdf
    • https://cdn.shopify.com/s/files/1/0432/1430/7496/files/dikudababovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/2699120611.pdf
    • https://static.usrfiles.com/ugd/b8c837_55d3f6d278d84667b42ec3c2829b52a1.pdf
    • https://static.usrfiles.com/ugd/2e16aa_31aa8204262b4d5a938728a41b711069.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a9b832ce99c473fb8a95568f8a7f68f.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad32f1790ac84b249115abf8fa40ad1a.pdf
    • https://static.usrfiles.com/ugd/32777b_cd889e91049341a8940001ee2cd61873.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e61b36b44b9497eb033aba670c7ed9b.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/67764219186.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/nuxoxawixixogenelofurimuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/zitefuxuxazuguxiporu.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_off0000662d.bin
8c7fc3b19fccde43b80bd8e88cadad9efbdd1df08c8e7b3251c7c61ffe541fd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x662D 5196 bytes
font_01_sfnt_off000077fc.bin
1b02fc1e92563059013cf8d9c84998a8659661cfcb27dd91b649e28289e66d57
pdf-font-stream PDF embedded font (sfnt) at offset 0x77FC 10744 bytes