Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27af46229f0b536…

MALICIOUS

PDF

36.7 KB Created: 2020-08-22 17:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47be4741aaf857b57b8a873cdf2122f9 SHA-1: 7de5cc861a45e9077ffc7e228d5fe14203eddd20 SHA-256: f27af46229f0b536893499576bf62cc25406fe6715ed8829c8605414e7a098cc
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=isomerism+questions+and+answers'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the redirector URL and several other Shopify-hosted PDF links, suggesting a lure to external content. The primary intent appears to be directing users to malicious infrastructure.

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=isomerism+questions+and+answers
    • http://muxotawo.j-acevedo.com/uploads/1/3/0/8/130814070/nunam_misuledulozona.pdf
    • http://files.globalbookrights.com/uploads/1/3/0/9/130969791/kuvujonupomadaj-beledotok-bedusa.pdf
    • http://vuwupanok.fluidplay.co/uploads/1/3/0/7/130776433/4898071.pdf
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/xavunise.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/4267295514.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/71972139698.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/metaphysical_poetry_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/kirubunilufokabatavovip.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/87849668296.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/zavanezokulepelidi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/9283553582.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0328/files/anorrectoplastia_sagital_posterior.pdf
    • https://cdn.shopify.com/s/files/1/0437/9449/7698/files/verbal_ability_questions_and_answers_for_gate.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_off000052d6.bin
25e3421f65fc1dabfc5f526564ee9e003e9ce37b6209fa1cec56c892675affca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D6 5092 bytes
font_01_sfnt_off00006415.bin
d7b3c754b4d93fd03c14642c546d7a304f17e1571d8a761668321fcb498c9a16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 10036 bytes

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