Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d08a701cbb30f2…

MALICIOUS

PDF

39.6 KB Created: 2020-08-12 11:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da0bed5c924c4fc23809c0b997aebafd SHA-1: 1b711cd8d57265129395d7fedbb2331beb6562fa SHA-256: d1d08a701cbb30f2c8325329f958d21be49e27976c7db620c348b9e3927a06e5
128 Risk Score

Malware Insights

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

The PDF document contains a link farm and a specific malicious redirector URL, suggesting it's designed to lead users to malicious content. The document body, though heavily obfuscated, contains text related to 'carers allowance form pdf', aligning with the SE_INVOICE_LURE heuristic. The primary malicious URL is https://ttraff.com/pify?keyword=carers+allowance+form+pdf, which likely serves as a redirector to further malicious sites.

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.com/pify?keyword=carers+allowance+form+pdf
    • http://files.wendymooreela.com/uploads/1/3/0/8/130813516/widugoraruziw.pdf
    • http://puwunama.hormoneandwellnesssolutions.com/uploads/1/3/1/6/131607163/sukidamuwavaka.pdf
    • http://vonaxu.totalcbdhealth.com/uploads/1/3/1/6/131607131/zuworotoxijukifuruj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/87873681015.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/kimefev.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/bedegoveke.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/56126359872.pdf
    • https://cdn.shopify.com/s/files/1/0428/1935/4791/files/24573292607.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/basic_medical_microbiology_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/bikagav.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/auditoria_informatica_ejemplo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/39424414120.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/a_dozen_a_day_book_3_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/guleku.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_off00005e01.bin
fc833668775fb5462ee67829b4ee428a4c104239b7ddc905a7107c2646b17696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 5296 bytes
font_01_sfnt_off00007004.bin
fc1b8be89099dfb1b47a9783d6922aca558c6d2ea099181f315f250fc971c994		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7004 9944 bytes

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