Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ee8d5acfd2a5f1…

MALICIOUS

PDF

40.2 KB Created: 2020-08-30 12:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee7ac42e706b6e83349853c46d3d155b SHA-1: 26e03a56d316a7297708ec9e744ba5dbc2c096ae SHA-256: 01ee8d5acfd2a5f130f857f417dc3c4603ad2962d40892472219ebdecbd75d2c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. The primary malicious link, https://ttraff.cc/wix?keyword=chester+barnard+aportaciones, is identified as a redirector to malicious infrastructure. This suggests the document is designed to funnel users through a series of links, likely leading to a malicious payload or phishing page.

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.cc/wix?keyword=chester+barnard+aportaciones
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1820/7911/files/14040572106.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/5344047269.pdf
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/92633250392.pdf
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/29005009484.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/xezewukiwi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/lemixegenusiwinirot.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/87654716210.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/40107982264.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1032/files/gigegituvobavese.pdf
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/53015580547.pdf
    • https://cdn.shopify.com/s/files/1/0441/0458/1272/files/wimumonili.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfaa338034b746f7a4c2e5beacc168d9.pdf
    • https://static.usrfiles.com/ugd/405339_900a32b974f2419abad7ad0bab24bea6.pdf
    • https://static.usrfiles.com/ugd/756799_e41d2f2a9ff4494c8dc71af640ee3414.pdf
    • https://static.usrfiles.com/ugd/5b604d_662d826d8f7948afa36cb4d34d6c7600.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_off00006003.bin
b849cb0cc6d5f39a637c6f4d39ed9aa8531eb17af94712cf256c566e06ec103a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 5172 bytes
font_01_sfnt_off00007183.bin
2dfb0f767881fe9bbcbafb4e036aa7c9b78bf3261383ceb41ac086aeedcc1185
pdf-font-stream PDF embedded font (sfnt) at offset 0x7183 10208 bytes