Malicious PDF — malware analysis report

Static analysis result for SHA-256 491979920bccf170…

MALICIOUS

PDF

49.6 KB Created: 2020-08-16 00:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb62f1d640d8d820f547e62b4becc956 SHA-1: ea717a116e7026f1dfba25cccb34331df4212477 SHA-256: 491979920bccf170fa0713f3eb2c0f4fa6982ed8c51ca2a558048bfdd4d0ede2
128 Risk Score

Malware Insights

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

The PDF document contains a lure related to an 'independent contractor agreement template uk' and embeds numerous links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=independent+contractor+agreement+template+uk'. This URL is the primary IOC, as it likely serves as the entry point for further malicious activity. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=independent+contractor+agreement+template+uk
    • http://zigibi.naomiardea.com/uploads/1/3/0/7/130775085/wexutu-gurogetinavov-tuxefekunad-bipoxemepezag.pdf
    • http://files.coloradostateprssa.com/uploads/1/3/1/4/131438002/vemawiri.pdf
    • http://files.belizesportsoutreach.com/uploads/1/3/1/6/131637014/5763838.pdf
    • http://files.katycupcakes.com/uploads/1/3/2/6/132695339/zamen.pdf
    • http://files.kdvp.org/uploads/1/3/0/8/130814716/lotarumufekevud.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/75688955831.pdf
    • https://cdn.shopify.com/s/files/1/0432/5815/1070/files/43378639279.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/damesodapafo.pdf
    • https://cdn.shopify.com/s/files/1/0449/5353/4632/files/74364355237.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/27470298766.pdf
    • https://cdn.shopify.com/s/files/1/0434/1042/3960/files/31364408794.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/65557884879.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/60941767979.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/anthropogenic_factors.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_off000076be.bin
ca3ce4852c8325c1e1641029c8f5f8f330e45509248721fbc43d9c641dd22723
pdf-font-stream PDF embedded font (sfnt) at offset 0x76BE 5048 bytes
font_01_sfnt_off000087c3.bin
a1ec58983584f913021702c45886c4861b6f00ea0ea2c53d1d54cdfd3fdc18a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x87C3 10152 bytes
font_02_sfnt_off0000aa82.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA82 4324 bytes