Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ccd70525ea10465…

MALICIOUS

PDF

46.7 KB Created: 2020-08-04 04:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4499306aeb09b53ea15f464563859c6a SHA-1: 5e406b92ab274ba00acd6b59e22fceda8b8d6bfe SHA-256: 4ccd70525ea104651066d7ecddc48f28db38f20659944ce6c0cd37643870eca6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous external links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at https://ttraff.cc/pify. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'colostomia'. The presence of multiple PDF links suggests a link farm or redirection strategy to obscure the final malicious destination. 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.cc/pify?keyword=que+es+colostomia+pdf
    • http://files.samanthajanereflexology.com/uploads/1/3/1/3/131378952/4695265.pdf
    • http://files.twc408.com/uploads/1/3/0/7/130775652/xikelu_rumak.pdf
    • http://files.mikemarrone.com/uploads/1/3/1/3/131378816/vuzufufirola.pdf
    • http://files.plazacateringboston.com/uploads/1/3/1/8/131871633/pawubiwofisag-wajexenobopolel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/51570672538.pdf
    • https://cdn.shopify.com/s/files/1/0433/4744/3865/files/fibotolenemufitekesogemin.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/kasuwaxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1047/files/vesifubalabeduzipopado.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/maxwell_unfortunate_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/zunibivubogogilutowur.pdf
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/fodozetafazitajurozibep.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/gekowika.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zorugeligix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5318/files/leliw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2583/files/jafovelurovironokuto.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/wexejovozurisinazozuwumak.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_off000076a4.bin
303277f5bdc3da40e72716b5609ce213f55fc36c38f97583b7f35c6bee99e5cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A4 5268 bytes
font_01_sfnt_off00008882.bin
fb2051f7ea5065bc9f5378ae02a393f7f81e4a520b9ac33d71fe1a986fefccfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8882 11232 bytes

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