Malicious PDF — malware analysis report

Static analysis result for SHA-256 d93274a15442d0cf…

MALICIOUS

PDF

49.8 KB Created: 2020-09-01 03:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c01075be0f7c00fe1de56cb1bbb175ca SHA-1: 6d02292b5c3023668cf4f7dff86f198291dfe678 SHA-256: d93274a15442d0cf219d719d98b1ffce9d21c837070a765a6eb0f63e99b501f6
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=avalon+737+plugin+mac', is designed to lure users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, containing numerous embedded URLs, with the primary one pointing to a Shopify domain. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=avalon+737+plugin+mac
    • https://cdn.shopify.com/s/files/1/0437/8827/1777/files/mutant_creatures_mod_1._8.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3462/files/tewigexawot.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/59596132494.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/kiperibukuzijotenowi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5266/0901/files/famoki.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/72692053087.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/dolixezewijab.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/47111801893.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/78976927332.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/18818309554.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/palepepejebi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4396/0485/files/57210021082.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/79669998709.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006630.bin
76bd448403375706b49cbf48e4ca721b2dc2d29f6d842f3f137f16113c3b67aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6630 7808 bytes
font_01_sfnt_off00008100.bin
2fc3b8b9d75cafac89760be0ad1ace005a7c2a8f49ecc73e9cf366913b71f9d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8100 5272 bytes
font_02_sfnt_off000092fa.bin
09d437bbb0b458f530b28f20af1c0e943f69799c551c5ab70ba568da9f34535a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92FA 11472 bytes

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