Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c917d0f0907cdc…

MALICIOUS

PDF

39.6 KB Created: 2020-08-15 03:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b366b35d18ef685ecb8dca82feebe5f5 SHA-1: fdb0204fa61e90fc7a5d04e002008379cb51d49a SHA-256: 32c917d0f0907cdc719400d741dcf7564e7cc6711ae8230b936a6f5e557531f6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=carpet+sweeper+reviews+consumer+reports, which likely serves as a gateway to further malicious activity.

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.ru/pify?keyword=carpet+sweeper+reviews+consumer+reports
    • http://files.netcasters.net/uploads/1/3/2/6/132696483/wofitox_lixamiso_guwosa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/baduduvawatadukipuvebagoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22584543347.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/36204127196.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/changeling_the_lost_2nd_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/57791963968.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/50558195887.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42820491308.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4171/files/topefo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5402/3327/files/xikadiwu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/dukaxidofigesotofe.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_off00005dde.bin
3614735b883e03da66ad2163e07a276aaea433cfe9fa86234de0ae6852a0e21a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDE 5104 bytes
font_01_sfnt_off00006f3b.bin
350c5c06853b6ea9b82821e3882921382fcfcbb3f8fe0586e2ef3f0e025662c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3B 10112 bytes

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