Malicious PDF — malware analysis report

Static analysis result for SHA-256 e28b86ab26eb8891…

MALICIOUS

PDF

52.0 KB Created: 2020-08-09 08:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 815a0cbc9868f4b98bf557d14b0da48b SHA-1: 15836d6efdd52d1c489b2ce1c6815aa7128e205a SHA-256: e28b86ab26eb8891829d37283eae3c0abaede1d8f73b7ee43b69ae63f3d0dab7
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is part of a larger scheme to manipulate search engine results or distribute malicious content through a high volume of links. The primary malicious IOC is the ttraff.com redirector URL.

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=abecedario+en+ingles+para+imprimir+pdf
    • http://files.taichilab-cambridge.co.uk/uploads/1/3/1/3/131378915/a0e2ee.pdf
    • http://files.danvaningen.com/uploads/1/3/2/6/132682030/juxonomedugobep_relebekeku_xasot.pdf
    • http://files.kerikeriguitar.com/uploads/1/3/2/7/132712050/4841412.pdf
    • https://cdn.shopify.com/s/files/1/0432/1450/4093/files/nutelosumezebepane.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/75587566952.pdf
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/dolet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/38646691854.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/vovusigedirukolivupep.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0719/files/competncias_e_habilidades_bncc.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/90253373125.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/sakemedujufifuwetomidoxaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/vegetogetixizagegomulotiv.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_off00007190.bin
591605c85382ec74a45492d6f799e69af36ad6b347cb96b7132b9743f674a697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7190 5604 bytes
font_01_sfnt_off0000848a.bin
4b66d1bef420c583bf52c2e3893667af04a0cfb2facbf00af88e5b94445a6376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848A 11832 bytes
font_02_sfnt_off0000aba2.bin
de4d8b2f57bd79f1a868fabda613d9936b110e31710edd4728466090b424b6ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA2 16340 bytes

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