Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c08f595c580d81…

MALICIOUS

PDF

92.3 KB Created: 2020-09-08 23:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600f26a2a1ec12044f73ff4573ba6e7e SHA-1: 91537c715fd560e49595a30dc58b21381aec544b SHA-256: 63c08f595c580d81b37541b1f09905b16f6f285c3b62857f1a4040bd62ee4031
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/wix?keyword=climate+change+in+australia+technical+report+2007'. The document body, though heavily obfuscated, contains text related to 'climate change in australia technical report 2007' and the malicious URL, suggesting a lure. The presence of many external PDF links also indicates a link farm or SEO manipulation tactic.

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/wix?keyword=climate+change+in+australia+technical+report+2007
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/land_sale_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/joxofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2773/files/mezesumusave.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/ar_15_upper_assembly_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/definicion_de_anexos.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/adminlte_vue_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/88389631442.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/wovutudige.pdf
    • https://static.usrfiles.com/ugd/96768c_d2037fb5d3d544c3becb9d96fa6d195b.pdf
    • https://static.usrfiles.com/ugd/165585_c9af982105164d5a933cbe31c8aaaf06.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/97707692790.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/gifudalokamefuzujerog.pdf
    • https://cdn.shopify.com/s/files/1/0433/4567/4389/files/51309157628.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/49635911718.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_off00012d6e.bin
bd2d2a7cc9aadc3d8015acfda9a824d7a3d5fcbda0b92f35bbc874e5941a89b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6E 5604 bytes
font_01_sfnt_off00014051.bin
b2da63dd8698417703aacc4b06274e03c5af52d7e86c96cb8b294716330a9c94
pdf-font-stream PDF embedded font (sfnt) at offset 0x14051 10568 bytes