Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d5fa4ceac1e407…

MALICIOUS

PDF

46.2 KB Created: 2020-09-01 05:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ee066900c78f3502c8d0dc3dc27b12d SHA-1: 54d382c7229d952d972e655e2ea0d6e6160377b0 SHA-256: 50d5fa4ceac1e4076ff6ffe8f85a841c96e12d9d36efd3bf6f40939e6485e384
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to benign-looking documents hosted on Shopify. However, one critical link directs to a known malicious redirector, ttraff.link, which is likely used to funnel victims to a malicious payload. The document body text, though garbled, contains keywords related to educational content, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/wix?keyword=carnegie+learning+geometry+answers+chapter+1
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/libro_autometrica_2020.pdf
    • https://cdn.shopify.com/s/files/1/0463/3414/8763/files/hydraulic_cylinder_design_guide.pdf
    • https://cdn.shopify.com/s/files/1/0456/8544/0671/files/circus_maximus_wind.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/setotidoxit.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/35793103793.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/39486574640.pdf
    • https://cdn.shopify.com/s/files/1/0434/4843/4844/files/jowozonobajigabupe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/cara_menghilangkan_watermark_pada_pd.pdf
    • https://static.usrfiles.com/ugd/857e61_23960a3d740940c599c197dc0af4a59d.pdf
    • https://static.usrfiles.com/ugd/2d1648_534c9bef66a7473a92487956e02bc513.pdf
    • https://static.usrfiles.com/ugd/1f5cef_e4698f73d7fe4316a1c5f9e5b47dba9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_97715f0395ef4dd58396046bfa7ab6f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a988c4a4caa4cfc925df0dacb8e53b4.pdf
    • https://static.usrfiles.com/ugd/d5415a_ecd8ff13494f4d21be8dddfc6403f66a.pdf
    • https://static.usrfiles.com/ugd/91e123_28330e44dd10464692258c5f1ad8b7bd.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_off000073fd.bin
a5b00fb01f2fd8cf19a4594088a9ac139126ba043477a276e24624346793778f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FD 5496 bytes
font_01_sfnt_off000086a2.bin
b6157bf1934b414a801301e7172d6702f75a4444e6f211ec667f5fcb3903ad0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 10992 bytes

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