Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d0e703bf6a2d3f…

MALICIOUS

PDF

73.5 KB Created: 2020-08-12 04:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc7fe39c4ca368c8cf3c9372a001acb9 SHA-1: bda06918338ff694ff04b4d1c43cf8570c171663 SHA-256: 82d0e703bf6a2d3fda503c9816d0cea9cf0d26c16d82090e6b8195567ece42a1
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link that points to 'ttraff.cc', a known malicious domain. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous links pointing to external resources, many of which are hosted on Shopify. The primary malicious link is designed to appear as a tutorial, likely to trick users into clicking it.

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/wb?keyword=sql%20server%20tutorial%20with%20examples%20pdf
    • http://files.usamartialartscumming.com/uploads/1/3/2/6/132681033/lelim_letoxomid_nopur_kegut.pdf
    • http://files.hoodarc.org/uploads/1/3/0/7/130776110/2787286.pdf
    • http://lesawu.cdnchiropracticwellness.com/uploads/1/3/0/8/130813612/ramalowowiw.pdf
    • http://files.rollingroses.com/uploads/1/3/1/0/131071137/dapix_putej.pdf
    • https://cdn.shopify.com/s/files/1/0438/0871/9005/files/18520144171.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/ret_paladin_pvp_guide.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/calo_plantar_tratamento.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/xadaselajimogur.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/42919907352.pdf
    • https://cdn.shopify.com/s/files/1/0438/3490/0642/files/vozoximejibuveturabufokid.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/luxofedabuvosiva.pdf
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/4370002471.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9538/files/25818335822.pdf
    • https://cdn.shopify.com/s/files/1/0433/9082/8700/files/53265342898.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/98063048291.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_off0000d239.bin
58f85de26e724623e5bb7c566b3aff6d423ca160a3b79db5f7ab063a4fceaa1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD239 5728 bytes
font_01_sfnt_off0000e5a7.bin
0d8604ba3dfee2663ca03f080622012a9509f681afba9edc947ec3da70d3e7bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A7 16480 bytes