Malicious PDF — malware analysis report

Static analysis result for SHA-256 5609bb59ad17cd7d…

MALICIOUS

PDF

59.2 KB Created: 2020-08-23 00:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f33a94912e699fdbaeef0d01481c0d3 SHA-1: d4370fb428fd37bce24ebea385143c9df289b96d SHA-256: 5609bb59ad17cd7d3496639234cf120fafd28614ba7cbfeee3f9783d1c4c93c6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that is also flagged by the critical heuristic, suggesting a lure to a malicious site.

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.ru/pify?keyword=behen+hogi+teri+song++pk
    • http://xuled.comprehensivewellnesssolutions.com/uploads/1/3/1/4/131413418/rovivatipazi-botugisuda-pijuput-lipajojudowu.pdf
    • http://files.jenniferocook.com/uploads/1/3/1/3/131398406/4742100.pdf
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/gabawazulanitevosixi.pdf
    • https://cdn.shopify.com/s/files/1/0436/5985/3977/files/fewazimonuritediti.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/virefozasibedike.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/mepodufotifowuxenube.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/73986985256.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/78359919632.pdf
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/blank_coordinate_plane.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7317/files/46740314715.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/military_college_jhelum_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/87281784975.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f4c.bin
97643cb5a438b31a0a4ee0c34583e206df6d200fb8bef06e9d63330fb2e6eca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4C 4740 bytes
font_01_sfnt_off00008f61.bin
dc69f32c72f69b08589f060da716839958c32bea708403845cfa25ea867d8f98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F61 14428 bytes
font_02_sfnt_off0000bcb8.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB8 16204 bytes
font_03_sfnt_off0000d1e5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E5 4324 bytes

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