Malicious PDF — malware analysis report

Static analysis result for SHA-256 4251f5be6d770535…

MALICIOUS

PDF

40.5 KB Created: 2020-08-14 20:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5eae3546dc6b5bf075c6c7c5826539d SHA-1: e6cccdb22ca5eaddae6870d58962f3b6170f0d70 SHA-256: 4251f5be6d7705352f69a30e65fd847b38e095c20b00f1f169488c087ac0013d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious due to a high number of embedded links, including one pointing to a known malicious redirector. The document body contains text related to 'character sheet' and a URL that appears to be part of a link farm. The primary malicious indicator is the PDF_MALICIOUS_REDIRECTOR_LINK heuristic, suggesting the document is designed to lead users to 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.cc/pify?keyword=best+fillable+5e+character+sheet
    • http://files.russellsproutsofsunnysideschool.com/uploads/1/3/0/8/130874317/saxope.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/fawotibusaxujoromuluxizob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0435/9811/9071/files/xaxotetalowadi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/git_drop_changes.pdf
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/mumolaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/monabibugiguwubazew.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/address_form_html_css.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606a.bin
bda35e649d33a0319531452052acd40f7d6fac86d9668f7d73f7473b8943b9b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606A 5280 bytes
font_01_sfnt_off00007254.bin
37dc510b05083bafe017f279e036d889f4e7d6f094cdd396292d1b55e1001d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7254 10420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.