Malicious PDF — malware analysis report

Static analysis result for SHA-256 568612268c2ec1c2…

MALICIOUS

PDF

94.2 KB Created: 2020-08-15 02:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0341759b695e99e22dd8301f6493e556 SHA-1: 130a7318fb2daca1cb34dc5a73a7c9f09c3a2fb7 SHA-256: 568612268c2ec1c2845874a9b996d7a3965d62565e1f4d745a9debc51e0a4ad0
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traff.com, which is disguised as a free music download. The document body, though heavily obfuscated, contains the same lure text and URL. The PDF also hosts a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt to drive traffic to the malicious redirector.

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.com/pify?keyword=cannapower+musik++free
    • http://files.otayranchmusic.com/uploads/1/3/1/6/131606165/5391954.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/tisarataletarijasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6523/6901/files/lofebegujuxodape.pdf
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/suwupajigifurasikofupif.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/numutape.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/samumuvepulimopoledologon.pdf
    • https://cdn.shopify.com/s/files/1/0437/8607/6309/files/bubatowexuzujazuxose.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/bimiguwafiwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/fuzogudadutememixi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2916/7270/files/5932369253.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/lujunirina.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_off000134b8.bin
3d48737811fa8a73b97703c367f34e71062e77a0517268f3330d12ea063abe26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134B8 5076 bytes
font_01_sfnt_off000145f6.bin
1d735cbc1eff524c240c7359ea52ffd98c05fa00aa1de19cbde7133b2b566862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145F6 11776 bytes

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