Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e1d0aea8384a56…

MALICIOUS

PDF

42.9 KB Created: 2020-09-01 23:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ec475d98cbee7c7361edc49239db236 SHA-1: 554bb8e071109783c870a4b53fb757ff7ebfca0e SHA-256: e1e1d0aea8384a56bb713353cffe34808d9853305a5b79766c98fd3a131c6fd9
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector link, indicating a social engineering attempt to trick users into downloading software. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK directly points to malicious infrastructure, and the PDF_SEO_LINK_FARM suggests a broad distribution strategy. The ML_NYX_PDF_MALICIOUS classifier also strongly indicates malicious intent.

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.cc/pify?keyword=baidu+browser+for+pc+64+bit
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/85510853161.pdf
    • https://cdn.shopify.com/s/files/1/0457/6211/7788/files/pumilarawalel.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/chemistry_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/chrome_android_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0464/0522/2555/files/tamogafubavi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/77495326150.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7a807859dc34f56aad9b7afb7e94efb.pdf
    • https://static.usrfiles.com/ugd/dcfb95_d2e6cb76a7aa4e76bc8f74b283bc03e8.pdf
    • https://static.usrfiles.com/ugd/c1108c_06a6be6627234b27925c94f07303135a.pdf
    • https://static.usrfiles.com/ugd/eda9ba_70c93b2165b7488a9ace61f07b0ef60f.pdf
    • https://static.usrfiles.com/ugd/ec0012_55266e4d92a547ea9d11bc0d14808911.pdf
    • https://static.usrfiles.com/ugd/ac72e0_dd78d6ecd1da41a18105dde6d2564794.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb33f4e8c93a45b0a8f7d5170809031b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d441e442d24465d8a858796d771ab93.pdf
    • https://static.usrfiles.com/ugd/b8c837_272f73ab7ff448199812a80fed95221c.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_off0000688e.bin
282563c560f8f37ce2c1ed9a4784504f9db96b719f76465389b6f6217dedbca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688E 5640 bytes
font_01_sfnt_off00007be4.bin
3bc4b9342338b7319338e89766bb7cd639b2d5fadc3db6d594370e621165648e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE4 10356 bytes

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