Malicious PDF — malware analysis report

Static analysis result for SHA-256 388c19a7b6534b2e…

MALICIOUS

PDF

41.9 KB Created: 2020-08-25 23:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ff43d6a1f63bc8fbe6f7309f1630a4b SHA-1: 214753fb7bd5076c34d85ecb6732ec5727c10df1 SHA-256: 388c19a7b6534b2e22c0d447174fce49d4f3c6bb9ae5d290588abe01c10c0827
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm designed to direct users to a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.com/pify?keyword=dian+hanson+books+pdf as malicious. The presence of multiple Shopify links, while many are benign, suggests an attempt to obscure the malicious destination. The heuristic SE_LOLBIN_RUN_COMMAND indicates that the document contains instructions for executing commands, likely to facilitate the redirection or download of further payloads.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=dian+hanson+books+pdf
    • http://files.anthonymichaelscatering.com/uploads/1/3/2/6/132695472/f8f39.pdf
    • http://files.curlyhorsevermont.com/uploads/1/3/1/1/131164198/lenuwuxuwanaded.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3615/files/metal_gear_solid_gamecube.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xasojikunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/fundamentals_of_cost_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/bad_company_2_apk_data.pdf
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/new_catholic_encyclopedia_vol_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54686169254.pdf
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/tewuwasuloturerume.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/51018057780.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/64291377373.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_off000064f6.bin
e2c11e31bb28c3f000e792e82ea794ab272741d53757f41a113dee2ba5a0536a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F6 5204 bytes
font_01_sfnt_off000076a0.bin
eb417413ac0c6660301785f81f805e06c535f6ac0a16520b9fafba674d3d38dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A0 10832 bytes

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