Malicious PDF — malware analysis report

Static analysis result for SHA-256 711e9947bb2a4047…

MALICIOUS

PDF

45.1 KB Created: 2020-09-07 13:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2da5d144a914b1f439e6b7e7f6b1f839 SHA-1: f0c07b4207007f0c68bed135fb6e6a8233e34f39 SHA-256: 711e9947bb2a40474575a209894dac57965a550ee0e933f3e2a9c261b1529a7e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same malicious URL. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute the malicious content. No scripts were extracted, but the primary malicious activity is the redirection to a potentially harmful site.

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=file+pdf+b%25E1%25BB%258B+kh%25C3%25B3a+kh%25C3%25B4ng+cho+copy In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/wabolezixazizagoripupubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1847/files/8859130157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/synthesis_of_thiazole_derivatives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/40253011105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7749/1098/files/anuragini_dj_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/organizational_chart_template_free_editable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/zotel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/aia_g702_excel_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/mapa_metro_amsterdam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/improved_critical_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/xasozuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/wosem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/zutenimojejilozezilanewa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50DE 5744 bytes
SHA-256: 0d7def986cac98cf9f69b8f09889a1afb44e097a26da016bd171d3a13d579f40
font_01_sfnt_off000063e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E0 19800 bytes
SHA-256: e73e8b2240ce90c822de71e3334ad489db21aa0da506f409b0c7e1f2751d6393
font_02_sfnt_off00008faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAF 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

Open this report in the interactive analyzer, or submit your own file for analysis.