Malicious PDF — malware analysis report

Static analysis result for SHA-256 569980c06d15db24…

MALICIOUS

PDF

37.7 KB Created: 2020-08-25 08:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b747802bd6c77e4e86227f2b573a81a SHA-1: 564194629c6af732d72cf9ffba17b31e51d032d1 SHA-256: 569980c06d15db2469e8f70227972fbb05ff0b6cdd72c57c53e6493313fcb6f8
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains text related to 'algebraic equations with exponents worksheets' and the malicious URL. The presence of numerous links to other PDFs, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=algebraic+equations+with+exponents+worksheets
    • http://sadebiw.soul-serenity.co.uk/uploads/1/3/0/7/130740178/fodiwokela_gedigigo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/environment_and_ecology_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/exploratory_data_analysis_with_sas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/27880787543.pdf
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/14295525850.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/osrs_watchtower_quest.pdf
    • https://cdn.shopify.com/s/files/1/0439/1544/4379/files/bristol_stool_scale.pdf
    • https://cdn.shopify.com/s/files/1/0435/3402/4855/files/pokemon_omega_ruby_rom_for_citra_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/dilulopufogusarisejen.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/da_form_31.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3784/files/job_applying_cover_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/25027489518.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_off00005574.bin
7a5d10a3060dbd60a996d1637940aa24d47b5f302a92066006a82f78a788042e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5574 5672 bytes
font_01_sfnt_off000068cb.bin
59ee450243a5d37208711fcf7896a2c62311650dc7eeec9384b1ded618544f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CB 9740 bytes

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