Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ea46714b28e611…

MALICIOUS

PDF

42.5 KB Created: 2020-08-30 01:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 682e0bf9a988b7caf6441de43dbfdbc4 SHA-1: 1bef444076f132d3f17b2266ffb2ffe45357b046 SHA-256: 16ea46714b28e611da33579fbd0d93aef609e97ed8b88ea92550630e4b8479f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains, forming a link farm. One of the primary links directs to a known malicious redirector at 'ttraff.com'. The document's content appears to be a lure, possibly related to search engine optimization or content farming, designed to drive traffic to malicious infrastructure.

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=the+golden+kite+the+silver+wind+audio
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/2941/3544/files/66622616710.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/sumifivugipediri.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/bracing_in_steel_structure.pdf
    • https://cdn.shopify.com/s/files/1/0467/7536/9881/files/zaxekepudinam.pdf
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/spps_mac_download.pdf
    • https://static.usrfiles.com/ugd/9757e7_bd472f6e4c0a414eaf977a54ec59fdc6.pdf
    • https://static.usrfiles.com/ugd/38bf1f_dbfa1c2b69924079b209989d7feacddf.pdf
    • https://static.usrfiles.com/ugd/b8c837_6573bfaeffc24253bee62bc962877ac2.pdf
    • https://static.usrfiles.com/ugd/7f46b5_162a716fef8b4066b0cf7fe84b191ed7.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/free_geometry_worksheets_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7074/files/suxusoloditezezajajere.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/5426751894.pdf
    • https://cdn.shopify.com/s/files/1/0449/4403/1899/files/using_react_with_django_templates.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b55.bin
ba8fcc1c0e1ecf07458a026338e1b2c57c250f623122b3e013c64e38e021a9f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B55 5132 bytes
font_01_sfnt_off00006cd3.bin
44ccf7a2782d2c2286b13c92a8c7a46b09e347df287547ae2b330f12990694d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD3 10032 bytes
font_02_sfnt_off00008f28.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F28 4324 bytes