Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dac0a0f382fc28c…

MALICIOUS

PDF

42.1 KB Created: 2020-08-30 06:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3adaf829c73d870a28f06258543cb708 SHA-1: 7e1abeb0eb3f29eb2e218cae4c4262b8aaf80159 SHA-256: 7dac0a0f382fc28ce43811f2a3fc58ed08f92c95555b186ed9f148cd1164f34a
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The embedded URL in the document body, 'https://ttraff.com/wix?keyword=into+the+woods+online+free', is the primary indicator of malicious intent, aiming to redirect users to potentially harmful sites.

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=into+the+woods+online+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0450/3358/6838/files/88983006324.pdf
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/vati_rn_comprehensive_predictor.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/zagajilixujumogere.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/92557796115.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/durev.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/25869821977.pdf
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/vuxatojotogudo.pdf
    • https://cdn.shopify.com/s/files/1/0463/0455/9261/files/30711791735.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/business_law_notes_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1112/files/administrao_estratgica_competitividade_e_globalizao.pdf
    • https://cdn.shopify.com/s/files/1/0449/9243/0248/files/76801152493.pdf
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/walmart_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/board_of_directors_resolution_template_uk.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_off00006788.bin
1675ba80df987c34d83b159eaca59b193331f3d6df161ca9e50ee9c8192d5bc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 4812 bytes
font_01_sfnt_off000077ec.bin
2aa41a49512cb3325cea8f05fabd46506f69338ae2ee88aaf749531dbbd36d54
pdf-font-stream PDF embedded font (sfnt) at offset 0x77EC 10804 bytes