Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2a6000a88ee01b…

MALICIOUS

PDF

42.8 KB Created: 2020-08-21 16:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 955a85f7613f345ed9f637864d5d1e41 SHA-1: 61e4b2bdd6e5a67f6a21675a1e62fc7e161ebb41 SHA-256: 6e2a6000a88ee01b00c6fff7f0ae3393edab5f72feed37768cd5da662dd9d3fd
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains references to URLs that are likely part of a link farm designed to attract traffic. The primary malicious URL identified is ttraff.cc, which is used to redirect users to further malicious content.

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/pify?keyword=vanilla+sheet+cake+recipe+allrecipes
    • http://files.seniorshomesupports.com/uploads/1/3/0/8/130813755/funuxanagirasoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5886/2997/files/pusogipadelibodamozew.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6827/files/antibiotic_resistance_protocols.pdf
    • https://cdn.shopify.com/s/files/1/0433/7349/4430/files/uneb_chemistry_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8652/8164/files/definition_of_velocity.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/cvc_reading_comprehension_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0429/7913/1551/files/fetetotamomutawu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/minecraft_target_selectors.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/48952590442.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_off00006121.bin
7abe21d5f82bfa45bdae369a196cbbcefbe1dda36aa73334a0330eb05e1ba6a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 5052 bytes
font_01_sfnt_off00007239.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7239 1800 bytes
font_02_sfnt_off00007ac7.bin
7b65990ee9489b6be174da885d717bf833235a7f33bdd935ff6e448456857edb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC7 10452 bytes