Malicious PDF — malware analysis report

Static analysis result for SHA-256 06bfcd49a1bca0f6…

MALICIOUS

PDF

50.9 KB Created: 2020-08-30 13:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d651eaf8723e828e3a7f2200b75b1022 SHA-1: e2625944fdb43750c356fc401ea5abb631fb287f SHA-256: 06bfcd49a1bca0f62c06056858046ee3f22e6bacfe8af460a338ecf29af20c73
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.com/wix?keyword=the+god+of+schemes', is flagged as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis.

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=the+god+of+schemes
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/91291398522.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6343/files/fufakotimegiwuwenofebufil.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/36672385056.pdf
    • https://static.usrfiles.com/ugd/f55bec_c3c1f75247e4402391941791a386679e.pdf
    • https://cdn.shopify.com/s/files/1/0439/3651/4216/files/10554966105.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/8743436445.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2981/files/riddle_school_4_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88490435411.pdf
    • https://cdn.shopify.com/s/files/1/0454/4344/8990/files/42920430631.pdf
    • https://static.usrfiles.com/ugd/b8c837_c31fdbf52d654338aafa2648c7eeb0f0.pdf
    • https://static.usrfiles.com/ugd/8b4172_064d75649371426ba4048a240d00eac8.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbbbc20557bc40bd85a6421d15087303.pdf
    • https://static.usrfiles.com/ugd/4b68be_07e30b6bea0045ee8b8fb6e102a66b28.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_off00008a04.bin
90d86e2b40809a760153bc194bc578203483cbee35387453a82b5ab26d84deb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A04 5044 bytes
font_01_sfnt_off00009b18.bin
4c5885cdc03461ef9986cb1b34bfa288bcd56f12c2a402a22de395130b52e470
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B18 10516 bytes