Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba76233414ae383…

MALICIOUS

PDF

40.5 KB Created: 2020-08-12 22:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2bb3e244577373f7f922836103ce874 SHA-1: dc7b0b4b2519f07fd428757c4d17aecb0c469d6f SHA-256: 1ba76233414ae383845d6e17c4717832b62cc438b967cb30d6429075fbf954d7
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 a guitar tabs PDF. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the link points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are hosted on cdn.shopify.com, suggesting a link farm used for SEO poisoning or to obscure the final malicious destination. The ML_NYX_PDF_MALICIOUS classifier strongly indicates malicious intent.

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.cc/pify?keyword=despacito+guitar+tabs+fingerstyle+pdf
    • http://files.partnersinsustainablelearning.org/uploads/1/3/0/7/130738725/1193a4b2a.pdf
    • http://files.gentletouchcreationsministries.com/uploads/1/3/2/7/132740747/070074.pdf
    • http://files.assuredaquatics.com/uploads/1/3/0/9/130969231/08fcff8.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/1795496139.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/keguxibuwape.pdf
    • https://cdn.shopify.com/s/files/1/0448/0339/1645/files/assessment_in_special_education.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/lejuniropufitabufuwidaxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/somugolowateji.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/lilowejise.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/27910935872.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/14256301103.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/piwegun.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/83561442001.pdf
    • https://cdn.shopify.com/s/files/1/0435/5499/6375/files/agriculture_en_afrique_de_l_ouest.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/kujanabefuzuvanuwiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5616/files/70771199023.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_off000052ef.bin
9e27bd47cb9498aafacf760faa8c584d2e517edb997caf50446ef33c5b98dce1
pdf-font-stream PDF embedded font (sfnt) at offset 0x52EF 5564 bytes
font_01_sfnt_off000065ea.bin
73fa69a5e02718aa001ef1d438c0dd7f46649133eb5763826efd2e2acb8b0935
pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 14932 bytes