Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcfe48aea88c7ac1…

MALICIOUS

PDF

60.6 KB Created: 2020-08-13 02:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50e33e8553b0ebba2d8fac7dd9396717 SHA-1: df61781686710c056d094f03ee82d8e3b7dab007 SHA-256: fcfe48aea88c7ac1666949887983665d6b56a5723e36eb938c640539fe257aaf
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a 'Nissan micra 2003 manual' and a URL, suggesting a lure to trick users into clicking the malicious link. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/wb?keyword=nissan%20micra%202003%20manual
    • http://kekikusix.purplepamfoundation.com/uploads/1/3/0/7/130775934/02abf550b.pdf
    • http://tobuf.ewoptx.org/uploads/1/3/1/3/131398367/74cbd.pdf
    • http://files.grovecanada.org/uploads/1/3/2/7/132741181/41fc72a5e26134d.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/99527299471.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/96907206838.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5316/files/remote_desktop_licensing_mode_is_not_configured.pdf
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/21474165173.pdf
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/letowusesamifesafinevef.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/11753925796.pdf
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/aerosmith_dream_on_tab.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/where_to_put_autoexec_csgo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/fezig.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/12490692141.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/breville_bread_maker.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7829/files/tutorial_solver_excel_2020.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_off0000b0d9.bin
4961a7b2508876295da02b716854310446bf212021e87859483cb06abd0fa692		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D9 5352 bytes
font_01_sfnt_off0000c2e2.bin
fc91f46ccc8fe26431681f965d4179f983d3293cbcf8f07db443b40ab9ea420f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E2 10348 bytes

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