Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f7ee14eb253942…

MALICIOUS

PDF

52.4 KB Created: 2020-08-11 09:36:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd1cf1276832390a9f50a0638cfbf449 SHA-1: 48d2b8c33a3cef837a52d522b3ffdbb85eaab873 SHA-256: 06f7ee14eb253942d58ceb661bbab64cd85d306842624e756e0af62d5721b608
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The primary malicious URL identified is https://ttraff.cc/pify?keyword=customary+law+in+kenya+pdf. The document body, though heavily obfuscated, contains embedded URLs consistent with this redirection behavior.

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/pify?keyword=customary+law+in+kenya+pdf
    • http://files.libbyyouthsoccer.org/uploads/1/3/1/1/131164236/vovapawigesidibaz.pdf
    • http://files.katescandleco.com/uploads/1/3/1/4/131483108/sugidirabapetaxalase.pdf
    • http://tibinuwu.noroc.org/uploads/1/3/2/3/132303382/edf2d8c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/32057755391.pdf
    • https://cdn.shopify.com/s/files/1/0438/9280/1704/files/63237096092.pdf
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/lidopefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/zewefimojubaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/vinubewisavifafiwana.pdf
    • https://cdn.shopify.com/s/files/1/0432/5552/9640/files/53417450576.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/10350121034.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/rakape.pdf
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/nanebiguripajew.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8919/files/vodasezikufanuvewizuweraw.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_off00008a8d.bin
793520ae12beafcb5ed9e3795e6bf18afe5e248dd50bd2e86ff8b34aa66429a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8D 5352 bytes
font_01_sfnt_off00009cc3.bin
2aa110e2342744cc94fbd0eae6cd210a85bfe31b84d4c07130f13105beb8bb14
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC3 12736 bytes