Malicious PDF — malware analysis report

Static analysis result for SHA-256 0739ef4176d0d89e…

MALICIOUS

PDF

64.6 KB Created: 2020-08-31 02:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ace683760b7482399d4bd57d825dd9c SHA-1: 396b1485d530ce8dea3f7debeb7a11d5b661254f SHA-256: 0739ef4176d0d89ee2f09bd8a1e70a0325c82711e9bfeb0715cc02a42c9a769c
154 Risk Score

Malware Insights

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

The PDF contains a link to `https://ttraff.com/wix?keyword=el+libro+de+urantia`, which is flagged as a malicious redirector. The document also contains a large number of embedded links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious redirection or phishing campaign.

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=el+libro+de+urantia
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/58157461800.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/wedupatinebonapovajub.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/misif.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/bad_moms_mp4_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/8714/9733/files/20388927761.pdf
    • https://cdn.shopify.com/s/files/1/0433/8063/7861/files/gimipib.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/1269308945.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/fegurawomamosonepa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8217/0022/files/teamviewer_9_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/81200595906.pdf
    • https://static.usrfiles.com/ugd/eda9ba_8d44336ea78f4b229ac38d9e310cc853.pdf
    • https://static.usrfiles.com/ugd/f515ca_00ebef0dd4e94aaa9b62c87f166b1f45.pdf
    • https://static.usrfiles.com/ugd/9b5f63_fe9e7f47362c4a78ae397e156b571a02.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_off0000bfe6.bin
f3a77f85b24a3d7c01f09e6b9e8cba448fb26381f7a6868b5369caa2e4b7cb63
pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE6 4736 bytes
font_01_sfnt_off0000d003.bin
08f988119c034796dc283c4ff39d919044fc5f12f4869b42042ff27d0cceaf94
pdf-font-stream PDF embedded font (sfnt) at offset 0xD003 11252 bytes