Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e7893a900554daf…

MALICIOUS

PDF

61.3 KB Created: 2020-08-04 11:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26ef8d5b349ca5374b6090405f11c91d SHA-1: d5c17a370b509fee1a223d4076c43309346a7f16 SHA-256: 5e7893a900554dafa4754d1fd2e6a8edfabccb4c8c68b4350e40c67aca9106b5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains hosting other PDFs. The document body, though heavily obfuscated, contains the same URL found in the redirector heuristic, suggesting it's the primary lure.

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=anthropocentric+environmental+ethics+pdf
    • http://files.theragirl.com/uploads/1/3/0/9/130969277/9296062.pdf
    • http://files.oliviamcgiff.com/uploads/1/3/1/3/131379371/7d4f62c5e4b3a.pdf
    • http://files.victoria-security.com/uploads/1/3/0/9/130969424/345ed5.pdf
    • http://files.colvigconsulting.com/uploads/1/3/2/7/132740925/rupazakokosotu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6911/1449/files/muparigek.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/barogegofomuzavagobotu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdf
    • https://cdn.shopify.com/s/files/1/0436/1158/6722/files/66247888020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/vagimilonekaximileneko.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1865/files/18932870910.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41230052817.pdf
    • https://cdn.shopify.com/s/files/1/0440/1692/6870/files/febokudoginere.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/80543629520.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/nulalubutituwukax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/51863514774.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_off0000a088.bin
ac4468052c08d7dc05bb8e3eacf157c51e0f868e85f743defd807e8c54394f4f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA088 5444 bytes
font_01_sfnt_off0000b2e9.bin
a63d4c8aa242a1293d21e74acfbce47c99bf4dcad46b12935387138399aafd45
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E9 17048 bytes