Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f1ad76164c00fc…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 14:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6529c3bdc6c9014ebb8093821ca4a1c8 SHA-1: 0f12c1ed4613d9277a62671439a1b716882b2ae3 SHA-256: 87f1ad76164c00fc2985c7c08a78c5e53025342be23f81b0ddcdf1fed5d81b96
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic further suggests this is a tactic to distribute malicious content. The embedded URL https://ttraff.ru/pify?keyword=free+radical+polymerization+mechanism+pdf is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on various domains, likely as part of the link farm.

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.ru/pify?keyword=free+radical+polymerization+mechanism+pdf
    • http://files.gordonptandwellness.com/uploads/1/3/0/8/130813888/rakajulewud-rebok-roxapowugifij-lupema.pdf
    • http://files.andreadoylemusic.com/uploads/1/3/0/7/130775292/1294fe626014e.pdf
    • http://files.deevinestudio.com.au/uploads/1/3/2/6/132695663/dixidujulezamom_nepupedisadaxo_zadesuwawora.pdf
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/grounding_earthing_bed_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/nafiwogowexamobapu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/tejolefaki.pdf
    • https://cdn.shopify.com/s/files/1/0452/5346/0130/files/madinah_arabic_reader_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/xunuxasakuxelerovipazara.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4685/files/8939288622.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_off00005f27.bin
9a3294e3873cbc2c00e186e859a01af25dff0d3480081d64d31b44336c487bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 5504 bytes
font_01_sfnt_off000071be.bin
2b0a1391f296f3ab0a9fe324f12db6a7ab0862f28e72d694f4185355053031a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71BE 9908 bytes

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