Malicious PDF — malware analysis report

Static analysis result for SHA-256 212d18075c067b02…

MALICIOUS

PDF

49.1 KB Created: 2020-08-03 23:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf03475fc24b73c7919f86d80a616862 SHA-1: aaeada80256cd7f43e287e28c955783d9d813d80 SHA-256: 212d18075c067b02a47c9d5d14334d08d438bd78af84767384b78accbba5f565
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL for the redirector, suggesting an attempt to lure the user to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=aggregate+planning+and+master+production+scheduling+pdf
    • http://files.groff4life.com/uploads/1/3/0/7/130740213/zosanoda.pdf
    • http://files.flagstaffsings.org/uploads/1/3/2/6/132696063/funugav.pdf
    • http://files.highgrundoncottages.com/uploads/1/3/2/7/132740181/tijojuwejazodurazuro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4744/files/5750613666.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/demugixuzosawanopofeji.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/comptroller_of_maryland_bfile.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/69440686583.pdf
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/8637296181.pdf
    • https://cdn.shopify.com/s/files/1/0443/1160/9500/files/convert_dbf_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/88015866636.pdf
    • https://cdn.shopify.com/s/files/1/0431/3740/0999/files/kutapigatuvo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/37853646288.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/tadogizafikuvuro.pdf
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/bawotab.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/vuzipifilixidoket.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/todisisagotuji.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_off000074a7.bin
f3fad3fede990f40e97fb85b4c636140e25e7b13ce705f5d3806c0864151e2ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A7 5440 bytes
font_01_sfnt_off000086f4.bin
eb7e3c93b7c02941ad17afed43d7f08bc7cf02cb21354695f253cff56fa87ef4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F4 10012 bytes
font_02_sfnt_off0000a8f1.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F1 4324 bytes

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