Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cce016cc1d31c67…

MALICIOUS

PDF

40.2 KB Created: 2020-08-09 05:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f3280e3c65f338312321b869f068a9b SHA-1: deaa151b9d3e0da68cf967d51f544d32cb34fa01 SHA-256: 9cce016cc1d31c67ed09a47f9e166344c24eedbc3a412103e2946cce8a616438
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a known malicious redirector. The document body, though heavily garbled, contains the same URL found in the heuristic findings. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=chuy%25E1%25BB%2583n+%25C4%2591%25E1%25BB%2595i+%25C4%2591u%25C3%25B4i+pdf+sang+%25E1%25BA%25A3nh
    • http://fizad.shawlegalservices.com/uploads/1/3/0/9/130969204/dd27b3dc9.pdf
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdf
    • http://files.lazyshamrock.com/uploads/1/3/1/4/131407152/17c6ee467d.pdf
    • http://files.marinasouthpiermural2015.com/uploads/1/3/2/6/132681409/modek-kusakejene-tepopar.pdf
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/resize_image_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/aikido_techniques_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6074/files/nikunavipudunegomumam.pdf
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/cbc_educao_fsica_anos_iniciais.pdf
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/yale_electric_pallet_jack.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/zesejoxovetuzomeluk.pdf
    • https://cdn.shopify.com/s/files/1/0440/8826/2821/files/64029862931.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/50272038716.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/employment_contract_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/romufapuwi.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_off000050d4.bin
ba932fbbafe55529ebcf88bb6427fd9ecb2cb4d404f158133f60cd51f0157e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D4 6156 bytes
font_01_sfnt_off00006409.bin
ce46a01f2604c987f187dae16eaec63db0a5636a0b5c78df15b3ddb8712e0a94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6409 20256 bytes

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