Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1fb7ccffefc075…

MALICIOUS

PDF

46.0 KB Created: 2020-07-29 13:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63d28ef546bf2c547b40cf444d5e990c SHA-1: 47ff18b43d2580b3722d208aba15137ac727b762 SHA-256: 2a1fb7ccffefc075d76aabbe7ca9df45aa6a5b9e5cd6542e2a8b5fab627c9122
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'wedding budget template'. The presence of numerous external links, including those hosted on Shopify, indicates a link farm strategy to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

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=wedding+budget+template+pdf
    • http://files.nextlevelsnowboarding.com/uploads/1/3/1/1/131164132/27c2ea9ddc3.pdf
    • http://files.dreamwayborzoi.com/uploads/1/3/1/4/131406391/ziwane-gevifokezije.pdf
    • http://files.jmartinshvac.com/uploads/1/3/1/8/131856574/9bbd925b.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/gedelujutefutigubalora.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/vivet.pdf
    • https://cdn.shopify.com/s/files/1/0437/2260/4695/files/pufebuleruvejufom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/36632564053.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0428/6201/8727/files/58588610705.pdf
    • https://cdn.shopify.com/s/files/1/0434/4211/0625/files/tikupipuvowadivuzuzojut.pdf
    • https://cdn.shopify.com/s/files/1/0431/2242/6013/files/zitujiditiwedovokipop.pdf
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/lodotutarata.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/45848687422.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/25231263939.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/kuvurenerozifezitob.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_off00007671.bin
b27f88303db765a06197c19af48e39f3a4f6996e70de232af4b93b1203268080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7671 5012 bytes
font_01_sfnt_off0000876e.bin
deb5f9de60730e20e8ef37808b0801e3ed1324865aa912325a5832d35565349a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876E 10400 bytes

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