Malicious PDF — malware analysis report

Static analysis result for SHA-256 84bb8df104cb246d…

MALICIOUS

PDF

62.1 KB Created: 2020-08-24 23:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e4edaae3aff649001b7d1154e5dbcae SHA-1: 07654cfd18a5b8a79857293daf636c88d56584bb SHA-256: 84bb8df104cb246d8b78fb00eafb0be14869a661b3ecd36990f22ced5a16e18d
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.com/pify?keyword=quadratic+form+mathematica'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. The combination of these factors strongly suggests a malicious intent to redirect users to a harmful site.

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=quadratic+form+mathematica
    • http://files.dominiquedunstan.com/uploads/1/3/0/9/130969386/subedib.pdf
    • http://files.metrolimorides.com/uploads/1/3/0/8/130874598/pibolatoka.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/23918070445.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/medicamentos_antibioticos.pdf
    • https://cdn.shopify.com/s/files/1/0435/0679/4651/files/sifal.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/8005/files/bigo_live_app_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/86378929695.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/6576996854.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/89510170708.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/64445765555.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/jinibogugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/weregavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/advanced_piezoelectric_materials.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7614/files/53128055899.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/migisuzabokutisinemuv.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_off000094f3.bin
9c1f8491655af0d8d10a59679c06abc2086ee8b8ec736b72c58d1d6b168e5305
pdf-font-stream PDF embedded font (sfnt) at offset 0x94F3 5112 bytes
font_01_sfnt_off0000a631.bin
894a0a60bfe05662aae2e2b9dec1b130fd038feb99b942756d5ca387078efedf
pdf-font-stream PDF embedded font (sfnt) at offset 0xA631 14596 bytes
font_02_sfnt_off0000d446.bin
9489323ceac382052326a24d882bb1802c8ad62db8fec4a6137d33505583fb25
pdf-font-stream PDF embedded font (sfnt) at offset 0xD446 16528 bytes