Malicious PDF — malware analysis report

Static analysis result for SHA-256 0297e4efcda0d588…

MALICIOUS

PDF

40.6 KB Created: 2020-08-28 03:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 529159e41311a3b8681d8de7f1620d8d SHA-1: 375c9edd8dd87a99da4aead81a94224d1e73b329 SHA-256: 0297e4efcda0d58860af3aecc79216e6213c1f2ea83c93562706a2f7c024821c
154 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.ru/pify?keyword=two+summers+aimee+friedman+review. The document also embeds numerous links to other PDF files hosted on Shopify, likely to create a deceptive appearance of legitimate content. The ML classifier strongly indicated maliciousness, supporting the classification of this document as a malicious redirector.

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.ru/pify?keyword=two+summers+aimee+friedman+review
    • http://files.themoonandmeapothecary.com/uploads/1/3/0/8/130814680/puwolumisufiz.pdf
    • http://lexuza.smockadoo.com/uploads/1/3/0/7/130739777/ace812.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/rilezekinur.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0875/files/94466616016.pdf
    • https://cdn.shopify.com/s/files/1/0434/1861/5975/files/tofavuvonifabilolesinevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/17_day_diet_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/49346090395.pdf
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/morfologi_diphyllobothrium_latum.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5799/files/61248888736.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/93394165560.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/zatoxuvibux.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/flow_chart_template_excel_2011.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/96535481327.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_off000061bc.bin
91b9dc45ea41b811afedcf8c3af7f00ec2ffafad6fbaf8128bfa871943ced18c
pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 5124 bytes
font_01_sfnt_off00007320.bin
ac4d43682fdab0b5f11b170d141ba18506ae7af733036c2347c9193cccc8af0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7320 10060 bytes