Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba4f5547c612621…

MALICIOUS

PDF

46.9 KB Created: 2020-08-15 02:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fa5c0b43f700414541ad18e1d309aa8 SHA-1: 8875712f678c1d71f75264ebe1878d03e37b1d0e SHA-256: dba4f5547c612621c7641ec26edf921892b13f89d24efb5b2fc0befd90281f97
128 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Addends T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, including one to a known malicious redirector at `ttraff.cc`. The presence of a visual download button lure suggests a social engineering tactic to encourage users to click the malicious link. The document body is heavily corrupted, but the presence of URLs and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic indicate a likely attempt to redirect the user to a malicious site.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=excel+vba+userform+combobox+vlookup
    • http://files.wolfstarpress.com/uploads/1/3/0/8/130814676/0403a4a8c079e.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3239/files/juwuzilobutimufixu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/83103867510.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/kentucky_aphasia_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/9602/1919/files/42073505437.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenixuraxolitater.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7957/files/characteristics_of_good_academic_writing.pdf
    • https://cdn.shopify.com/s/files/1/0434/7805/7122/files/100_statistical_tests_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/que_es_un_excipiente.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/lofamefosowafafir.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_off00006d72.bin
554b7ab498a6b2c7418a533aa5c99a99b91987c7861fd0fed92ebecf5922711d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D72 5452 bytes
font_01_sfnt_off00007ff2.bin
04323b3a1ffd2c22eda0ad6f87062714895cfba13e369a4ca8b40cda321b0b68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 15292 bytes

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