Malicious PDF — malware analysis report

Static analysis result for SHA-256 c332b7a6f56aea4d…

MALICIOUS

PDF

40.8 KB Created: 2020-09-18 21:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01415785d83ddce0b485b852e79cb6f4 SHA-1: 2b7a1ddcbeb7d62337a5909b8824f23ddcd1339b SHA-256: c332b7a6f56aea4ddcd7373da9aa4e49fccce75785eddb0bd1e81731b8760191
150 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 redirector service. The document body, though heavily obfuscated, contains text suggesting a lure related to '7x7 rule powerpoint' and includes the malicious redirector URL. This indicates an attempt to direct users to malicious content through a link farm strategy.

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.me/wix?keyword=what+does+7x7+rule+powerpoint
    • https://1e3f8753-fb4d-4dcd-828f-d3017eed1763.filesusr.com/ugd/76aeb6_bbcd3cdc78f64f5892de92a0ddfb2e1d.pdf?index=true
    • https://5940a852-39ee-445a-83b6-28b896ae37d1.filesusr.com/ugd/48bf55_f37b10714028436cb74425e2eb3fdbc8.pdf?index=true
    • https://d9da917e-20e0-4db7-b0da-a27c0e005144.filesusr.com/ugd/b09e1d_eefc98c5cc2b4ff1a68c5d8cf619edd1.pdf?index=true
    • https://1c7fe5ae-d0fe-4752-86a6-1d359363bce0.filesusr.com/ugd/592671_6087ba56fd36494b8e760e303b08aedf.pdf?index=true
    • https://7c63101e-cc53-429e-9bfa-49af1a13b07b.filesusr.com/ugd/625844_315d41b92cd04474a0e52d0b86cd77b7.pdf?index=true
    • https://2094e80e-e0a9-41d7-b249-d6bff10b49bd.filesusr.com/ugd/26481d_4b4f1332791045dca39228992f3cb204.pdf?index=true
    • https://a0b3e7f2-a122-426a-8c7a-f95c635899d4.filesusr.com/ugd/61804c_81f282fdbe234fda8925779c31405f61.pdf?index=true
    • https://d0652ac5-4119-46e1-8f69-f2d87b957969.filesusr.com/ugd/51c472_8d3ea3e8fc854609994cf3e033fde4e5.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/4619/9711/files/maliweregino.pdf
    • https://cdn.shopify.com/s/files/1/0433/9977/4366/files/19168800646.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/fifisifibozufikesawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6549/files/pobegiwoxirag.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/kunelira.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_off0000623c.bin
a21a72097674d79b0afbf6038256298791ffeea1bf9070dabbb85ac6a80c4f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623C 5300 bytes
font_01_sfnt_off0000745d.bin
50ab17a4a3fcaf291a9e509992a975c3544577dc5b2d0bbaa4c1a9b63b14db88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745D 10052 bytes

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