Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ca126f903111c8…

MALICIOUS

PDF

48.8 KB Created: 2020-08-26 04:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f87329c0126132a24b26acca059555fe SHA-1: 674ec5c5d6754fbacc8ac35edbc5581c7ac31ab4 SHA-256: 03ca126f903111c8cae620118a388ba0d3357f2e8e568f1ccc3221ed811f077b
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=epopeya+medieval+caracteristicas'. The document body also contains this URL, suggesting an attempt to direct users to potentially harmful content. The presence of numerous links, including those to Shopify domains, indicates a link farm or redirection strategy to obscure the ultimate destination.

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/pify?keyword=epopeya+medieval+caracteristicas
    • http://files.aflcanadashop.ca/uploads/1/3/1/8/131858975/5cf29cc894c53.pdf
    • http://files.newjerseyalmanac.com/uploads/1/3/1/8/131871642/tipopale.pdf
    • http://files.americanlegiongh.org/uploads/1/3/0/7/130738741/c6fdd50a8.pdf
    • http://ridijit.sjeliz.org/uploads/1/3/2/7/132740214/837944.pdf
    • http://files.tannervalleychurch.com/uploads/1/3/1/4/131409037/e7300b5a900c67d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/wodifufiguwof.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/75476421806.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/auditing_and_assurance_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/whatsapp_plus_for_android_5._1._1.pdf
    • https://cdn.shopify.com/s/files/1/0440/2007/2613/files/resume_cover_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/4637/0471/files/foxit_reader_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/51707210297.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/tuzawatapaki.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/kajelisad.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/gate_aeronautical_engineering_books.pdf
    • https://cdn.shopify.com/s/files/1/0462/6907/1511/files/jeopardy_template_powerpoint_youth_s.pdf
    • https://cdn.shopify.com/s/files/1/0459/7710/8647/files/fluke_test_report_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/86659138313.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/ribisubujegogemafixevo.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_off000081d6.bin
064c90e6c946f93cba1c19ce4076104206699801f1fdb8b3b3200cbee744c6b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D6 5340 bytes
font_01_sfnt_off000093ef.bin
a98a09eef8353c937dc38fef5e4377b3222f06499118a6d358eafcdfe4c8e014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93EF 9992 bytes

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