Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa8360514171c56…

MALICIOUS

PDF

43.5 KB Created: 2020-08-05 16:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e491bf156c7c59c2e0ff723277f328c SHA-1: 005e134058e571b069d2286d71799177c288949a SHA-256: bfa8360514171c56c79c19d743a9342b7f58c50475746006803b1e6dd7a89a58
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as information about a football game. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the presence of numerous links, likely for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=information+about+football+game+pdf
    • http://files.libertymerchandise.org/uploads/1/3/1/4/131453541/04af9172cb18dd.pdf
    • http://files.lknailsandbeauty.co.uk/uploads/1/3/2/6/132681938/wovaxale.pdf
    • http://files.facademarketing.com/uploads/1/3/1/4/131438274/8506957.pdf
    • http://puraginoj.vitriol3d.com/uploads/1/3/0/7/130739430/nanulenosade-sodilorabumuku-pufomow-pipofukamigoriw.pdf
    • http://files.amandacasale.com/uploads/1/3/1/4/131438389/f439f65e.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/28515515621.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9670/files/68914074492.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/27070421482.pdf
    • https://cdn.shopify.com/s/files/1/0435/5679/8613/files/do_a_barrel_rool.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/87902307689.pdf
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/roladomab.pdf
    • https://cdn.shopify.com/s/files/1/0432/2453/1101/files/25743296953.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/15945517071.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/exploring_management_5th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/xusawomegakugibidonu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.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_off00006bd2.bin
d55ab73cd19a329e52aeb73f3d5dcfe17fa94a0edadef12b16317a89e99dc8e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD2 5260 bytes
font_01_sfnt_off00007d99.bin
05d0e50d96579a3ac3a743c26518b30b24aa9b9736fb5f2abb23e8b4b297b4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D99 10256 bytes

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