Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f9070a3b76b54f…

MALICIOUS

PDF

39.5 KB Created: 2020-09-04 01:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6766afb347f7cd675009f05333bc4ce SHA-1: 39f46028d8dcba45034a06539a064710c21c69a3 SHA-256: 43f9070a3b76b54ffc035bc4743fe1011497fcf1f39606d7d09c037bc5d4aff5
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of external links, indicating a link farm or redirection strategy. One of the embedded URLs, 'https://ttraff.club/wix?keyword=a+capital+letter+wallpaper', is identified as a known malicious redirector. The document body appears to be malformed or contains obfuscated text, but the presence of the malicious URL and the link farm heuristic strongly suggest a malicious intent, likely for SEO manipulation or user redirection to harmful content.

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.club/wix?keyword=a+capital+letter+wallpaper
    • https://static.usrfiles.com/ugd/b65acf_1e153514537d448e873955772784a06b.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_10c20212fa4f4e4ba4b4068869dc3389.pdf
    • https://static.usrfiles.com/ugd/ab0441_15811e89ff374b4391b3b3bd27f3252c.pdf
    • https://static.usrfiles.com/ugd/f84671_9777ce1484884fc3a0b5d94725a019fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd3b8e362a2e4060896fd3ae632f73cd.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/retorika_masining_na_pagpapahayag.pdf
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/61946710536.pdf
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/temevuxinepopatuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/34959122886.pdf
    • https://cdn.shopify.com/s/files/1/0432/3360/7842/files/ravatadigolabujijevut.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/45748408168.pdf
    • https://static.usrfiles.com/ugd/510a18_b512d7ee5557462e9c932d972e77ba3d.pdf
    • https://static.usrfiles.com/ugd/934fc3_c0e23069759b4cf08d2bca939c0f8415.pdf
    • https://static.usrfiles.com/ugd/bb05c1_f4f7647078d344b1b1297a81432eabde.pdf
    • https://static.usrfiles.com/ugd/838e7e_bbd0c0dd0c7d43a6878453198721270a.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_off00005ee4.bin
94b6b97cd6c2487ad21beb5a66d4c1ad7d5f15652b85452a6f430604f1258b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE4 4832 bytes
font_01_sfnt_off00006f72.bin
e80534bf9943cee5a25c6aa3ed9b967052a99165412fc8e736397b29b1ad4880		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F72 9760 bytes

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