Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66ebb9d0c72cc77…

MALICIOUS

PDF

55.7 KB Created: 2020-09-02 09:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5be496ee41c0eb2fe65bc1e5a5cc0885 SHA-1: 1445927c13103f7665320fb193b0745e5d6c3999 SHA-256: a66ebb9d0c72cc77fe63150431ca6e962e95155a303f4cc75175bb660414e6e7
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to downloading "Borges ficciones pdf descargar". It embeds a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a mass external PDF link farm, suggesting an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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.link/pify?keyword=borges+ficciones+pdf+descargar
    • https://cdn.shopify.com/s/files/1/0453/4956/8667/files/marvell_88ss1074.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/having_clause_in_sqlite_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/15275948183.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5686/files/mezigexidolopigosatek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/wemafowiz.pdf
    • https://static.usrfiles.com/ugd/b8c837_f63ae19d6cf245e1ad93679d93250429.pdf
    • https://cdn.shopify.com/s/files/1/0451/3038/3514/files/15918278211.pdf
    • https://cdn.shopify.com/s/files/1/0438/2988/7136/files/free_inference_worksheets_1st_grade.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/azure_devops_release_pipeline_artifacts.pdf
    • https://cdn.shopify.com/s/files/1/0463/8585/6667/files/negative_prefixes_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/gazutus.pdf
    • https://cdn.shopify.com/s/files/1/0459/7340/5856/files/technic_launcher_minecraft_pirata.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/acland_s_anatomy_volume_6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e80.bin
54b7e25d112a43a098771e9b174184fd481cbfb8a8032a907398d936e2cb4b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E80 8552 bytes
font_01_sfnt_off00009aad.bin
019f4f1e7b250d794cb971a0fe164e3ba76ea25aae03baebfd731f07cc2a114b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAD 5340 bytes
font_02_sfnt_off0000acf0.bin
8c5d8abaef9ae09ee4cc04416852636eadbb4abcce854225832c8bd29e4c489b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACF0 11208 bytes

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