Malicious PDF — malware analysis report

Static analysis result for SHA-256 df39c338fe8b4d77…

MALICIOUS

PDF

54.2 KB Created: 2020-08-06 01:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b83a0776e525ec2f3b53f3bd4e90d75 SHA-1: d1550da671ced6cb8336127b4d5227b456eab4de SHA-256: df39c338fe8b4d771f91d7ef955e355183e931ff89c9ab0094d6f62621226b90
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=agile+project+management+with+scrum+microsoft+pdf'. This URL is embedded within the document body, suggesting an attempt to trick the user into clicking it for a purported PDF download. The presence of a link farm heuristic further indicates a malicious intent to distribute links.

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=agile+project+management+with+scrum+microsoft+pdf
    • http://files.sydneyhuntlights.com/uploads/1/3/0/7/130775511/2c132dded.pdf
    • http://files.francescaterberg.com/uploads/1/3/1/4/131437753/misimog_bumabodikun_warebulugetigub_tuvimufe.pdf
    • http://files.moneymentorph.com/uploads/1/3/2/6/132695575/zotogedaxekaxabe.pdf
    • http://files.davesartdimensions.com/uploads/1/3/1/6/131606348/vojetiborakupo.pdf
    • http://files.kbayathleticclub.com/uploads/1/3/0/8/130814258/fewomajomo_jafiwiti_kadiwigija_kowagebopeziwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/architecture_residential_drafting_and_design_12th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7222/4421/files/76808289783.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/angioedema_hereditario_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/38135229071.pdf
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/zojenekaxikabeforifiniguj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/bumovisanonamabatenuloja.pdf
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/bobby_valention_tell_me.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/waxelonasifovare.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/wimidunadidez.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/xalewevuperox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.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_off00009354.bin
15da8467fcfbdf4dce0dc19a1bace65f2f2bfeb8ce054a83f126ec6134e5da3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9354 5724 bytes
font_01_sfnt_off0000a6bd.bin
979f19f340e04652ebe52240f58219fdf591ead1a07f63e36dae06b180b1b9c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6BD 11108 bytes