Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d0cb3314c70930…

MALICIOUS

PDF

69.2 KB Created: 2020-08-11 17:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 546bbadcdf0b97e65b44d14d117d0d07 SHA-1: cbb6a1d165a016db9c151418d7faf3b3678dc85c SHA-256: 92d0cb3314c7093060d2e8bd4d68eba15c106808576262b9df602c8131ce9b2f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=autocad+2020+shortcut+key+pdf'. The document body, though heavily obfuscated, contains references to 'Autocad 2020 shortcut key pdf', suggesting a lure to entice users to click the malicious link. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=autocad+2020+shortcut+key+pdf
    • http://kamez.kayyscollection.com/uploads/1/3/1/6/131606490/lusuninulegawagesiwa.pdf
    • http://files.pointyhalo.co.uk/uploads/1/3/1/4/131453871/lixadafizu-pifod.pdf
    • http://files.jewishgardening.com/uploads/1/3/2/6/132681192/nexinakesixa.pdf
    • http://files.pointyhalo.co.uk/uploads/1/3/1/4/131453871/lix
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/160154444.pdf
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/towewojusupum.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/21420334849.pdf
    • https://cdn.shopify.com/s/files/1/0435/8995/9843/files/mujunoxubedogij.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/vazasonetatidegux.pdf
    • https://cdn.shopify.com/s/files/1/0438/3028/0352/files/baofeng_uv_82_manual_em_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4838/files/pizegemexuxetebim.pdf
    • https://cdn.shopify.com/s/files/1/0439/7475/4462/files/fewivomezepemojajuzedilu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/terafixelumowew.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/75501658733.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/cfa_level_1_ebook_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/70790262276.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/83974171589.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bebc.bin
da998d27a9fd4b736b5a72354835db52d8ae8244af8c1c81bc5a26dc01e45277
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBC 5368 bytes
font_01_sfnt_off0000d114.bin
c397de9f0a50fc02c4a76ee87f07fdddabc65c91f92e4c0c9c66930da0a41382
pdf-font-stream PDF embedded font (sfnt) at offset 0xD114 12656 bytes
font_02_sfnt_off0000f951.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF951 4324 bytes