Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee485df6a104a0bf…

MALICIOUS

PDF

48.8 KB Created: 2020-08-25 01:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d728ebcdffb56fabf763586a96fa4d1 SHA-1: 03bea79496a5cce27bc77aa1ca1058d8bae7e296 SHA-256: ee485df6a104a0bf13f9b51159455b527c1e044667e9534d054ce00b11eb2e34
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=borazine+preparation+pdf', which is a known malicious redirector. This suggests the document is designed to trick users into clicking the link, leading them to malicious content. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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.cc/pify?keyword=borazine+preparation+pdf
    • http://files.rockyroadduo.com/uploads/1/3/1/1/131164252/c4efddbfedf.pdf
    • http://files.planningstreet.com/uploads/1/3/1/4/131455398/zajibexunozej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97242885008.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/deruwepexuwovezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42778981568.pdf
    • https://cdn.shopify.com/s/files/1/0432/3655/6962/files/razasibisifeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/51082550462.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/xejowifenubuxujoxuxes.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8565/files/samples_of_argumentative_essay_writing.pdf
    • https://cdn.shopify.com/s/files/1/0430/3310/0439/files/93790491759.pdf
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/62782528007.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/medicamentos_barbitricos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/21549034366.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonexosorovofevovu.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_off00007f84.bin
3ef829ce104197071eca39f88f00222b10eb87d1773a4f650b7f908ef449739f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F84 4924 bytes
font_01_sfnt_off00009058.bin
e878e0c7ba0334ee64a600478cd8acc65dff4d8b93b055739c2c44230137ee6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9058 11168 bytes

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