Malicious PDF — malware analysis report

Static analysis result for SHA-256 31b1bb2c8f223070…

MALICIOUS

PDF

42.0 KB Created: 2020-08-14 01:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 811e7e28684e703b294b5acc70356271 SHA-1: e9a3d4c40d6475711eed91279edd9c2cf2cb2e91 SHA-256: 31b1bb2c8f223070b9bc0134b9bbd160182afa458d70e09256d96218e71069cb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=paint+shop+pro+9+full', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to redirect users to malicious content under the guise of offering software.

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/pify?keyword=paint+shop+pro+9+full
    • http://denefikid.peggymdavis.com/uploads/1/3/1/3/131380107/mimeraro.pdf
    • http://files.pandlexpressinc.com/uploads/1/3/2/3/132302814/88e12f8da95.pdf
    • http://files.judilane.com/uploads/1/3/0/7/130739864/lolenirez-domozuw-luparawoniso.pdf
    • http://nefinaju.ilandaguesthouse.co.za/uploads/1/3/1/4/131453870/5a56215bb01ce.pdf
    • http://files.elginparkathletics.com/uploads/1/3/1/4/131406413/xikudenaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/muvodofibewonofavex.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/76597185819.pdf
    • https://cdn.shopify.com/s/files/1/0429/4619/9711/files/jimez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/fizajesube.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/77798648041.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/62571342123.pdf
    • https://cdn.shopify.com/s/files/1/0429/3876/1379/files/wallpaper_for_whatsapp_profile.pdf
    • https://cdn.shopify.com/s/files/1/0432/4491/2802/files/miguxotosevodizek.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0629/files/algebra_2_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/12471785664.pdf
    • https://cdn.shopify.com/s/files/1/0440/4396/0485/files/rukilokukepojiwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/biserazupogidisorow.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/gafigesazufobexo.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_off00006685.bin
98731f0d77a7a5a5ebf976312b2ee790dd37baa19cc3e8f76fe7dce7cf86f1c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 5148 bytes
font_01_sfnt_off000077f9.bin
14b528c678f974258bfc5c9ced730b9c95108d721e5cecbd6e2f24102a32254e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F9 10260 bytes

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