Malicious PDF — malware analysis report

Static analysis result for SHA-256 287e27ca69b4a9c3…

MALICIOUS

PDF

34.9 KB Created: 2020-08-15 03:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 511176035cf0ad26afb4ed6e95988c72 SHA-1: c16c7fc99761ebb0bcd68bc5657db6186283d086 SHA-256: 287e27ca69b4a9c357ac6552348046722f68e62fa0a3484910a19a95b5a243b6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=cg+bhakti+song++video', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other PDF links hosted on Shopify further supports the link farm heuristic. The file's purpose appears to be directing users to malicious infrastructure.

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=cg+bhakti+song++video
    • http://ludedeses.lightlabint.com/uploads/1/3/2/8/132814930/kexuluzusefud.pdf
    • http://talidiwet.psychtoolkit.com/uploads/1/3/2/7/132712116/21f6bba.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8053/files/67583985566.pdf
    • https://cdn.shopify.com/s/files/1/0437/7119/9642/files/18271567762.pdf
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/gta_5_cheats_pc_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/9365/9543/files/afaa_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/41527155679.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/44742122775.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/39129553345.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4743/files/10283520523.pdf
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/proyecto_de_grado_umsa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/69341323858.pdf
    • https://cdn.shopify.com/s/files/1/0430/7750/1095/files/96939535875.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.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_off000040a3.bin
07e99caa9f93df456bea7ada91ef988e6adf68adb5ce920d885de3005d9aa480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40A3 5036 bytes
font_01_sfnt_off000051c4.bin
454864e7c9ac2675d12f7d6eae0c4a4c58843554654935c39b7e08795ab9b030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51C4 9260 bytes
font_02_sfnt_off000070c8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C8 4324 bytes

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