Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cd6b899a2e70a0…

MALICIOUS

PDF

56.1 KB Created: 2020-08-16 14:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72154fa9c34cfa301dcda4a30d3651b2 SHA-1: 0954ad4021736d43cc51772982df687ca90a9f97 SHA-256: d3cd6b899a2e70a0c53d8b89e3f9e774fe79ad740a109fa63409428b337b92d9
168 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and part of a link farm, specifically employing an advance-fee scam lure. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. The primary attack vector appears to be tricking the user into clicking a link that leads to malicious infrastructure.

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=gentleman%2527+s+guide+cast
    • http://files.brianbaginski.com/uploads/1/3/2/7/132740525/111540.pdf
    • http://files.carbonprecision.com/uploads/1/3/2/6/132695575/mivinase_pekugiv_togoji_siwoxifamaredo.pdf
    • http://files.stadiacatering.com/uploads/1/3/0/7/130776589/legunilukaf_gowit.pdf
    • http://lasal.windermereneighborhoodseattle.org/uploads/1/3/0/7/130775734/4a1b96a45.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/nakuko.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/zajasozadiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3414/files/89752721400.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/historia_del_peru_jorge_basadre.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/fovisonimupuzunas.pdf
    • https://cdn.shopify.com/s/files/1/0437/2601/2567/files/1994_chevy_silverado_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/4748622817.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/gre_preparation_material_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/jekebedaxuruvotazudewow.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9208/files/capital_cities_quiz_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/10799665689.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0636/files/18192906735.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_off00009e1f.bin
b7faf7b2affacb091b315f688f3491fde8b39e930df16e840c56dc09009620ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1F 5228 bytes
font_01_sfnt_off0000afdd.bin
64503280f8d04d7a43cd0483b72ca2fb36226a0044063edc600268a0b703c7ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDD 10420 bytes

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