Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72ad9b7a4c8b2ca…

MALICIOUS

PDF

38.4 KB Created: 2020-08-22 04:14:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d39fdbd44e22f04e923eb100d59a6e3 SHA-1: 54274b8fcfe97cfd4e759e614b2c5ff0d9e7e4e6 SHA-256: e72ad9b7a4c8b2caf611d7723daeda23ff7e08d0b615420174ce50b2eb5f25b4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains a URL that points to a redirector, which is likely used to obscure the final destination. The presence of numerous external links, many pointing to shopify.com, suggests an attempt to manipulate SEO or distribute content through a seemingly benign platform. No scripts were extracted from this sample.

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=carescape+r860+pdf
    • http://files.daphnemeesters.com/uploads/1/3/0/9/130969693/towit.pdf
    • http://files.counterviolenceusa.com/uploads/1/3/1/3/131398054/899147.pdf
    • http://bexotedom.kathrynluster.net/uploads/1/3/1/4/131438873/9494388.pdf
    • http://butow.oakheartcenter.com/uploads/1/3/0/8/130874493/gojasapowenaru.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/bikini_body_guide_beginner.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1809/files/31875228583.pdf
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/ribadadu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/83234844424.pdf
    • https://cdn.shopify.com/s/files/1/0432/1538/8840/files/algebra_mixture_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/toziwogodij.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/bukhari_hadees_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/soledovuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/waltz_of_the_flowers_violin_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/8149/6744/files/vuzugeletabanewudedoju.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/unir_archivos_online_sin_limite.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_off000056a1.bin
8a46f44c85a8cd63f3c488ef45dcb186f8c7344c6196c25340f2b0dc60174b4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A1 5512 bytes
font_01_sfnt_off00006969.bin
89ed27eae2756207de047d5ff99fbc8ea88e0837fe2377b290399ae84c5b7529		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6969 10500 bytes

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