Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7777bd8f81de1a0…

MALICIOUS

PDF

43.8 KB Created: 2020-08-12 05:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3bf5f174948b981a9f04da13275780e8 SHA-1: 815d72b920ef49e02cf6836c5015397f7d345442 SHA-256: e7777bd8f81de1a04ae6ea7a1bf65c13b8b74ed3c7b95542e2efb349431949ca
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9445

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=mata+ki+aarti+pdf+download In PDF document text
    • http://kirixo.7220mercantile.com/uploads/1/3/1/4/131409090/tamitumo.pdfIn PDF document text
    • http://files.hairextensionsbystacey.com/uploads/1/3/2/6/132682686/7f8200977e.pdfIn PDF document text
    • http://files.sweetcelebrationsllc.com/uploads/1/3/1/3/131380063/1772054.pdfIn PDF document text
    • http://files.ywcaminot.org/uploads/1/3/1/3/131381605/7937938.pdfIn PDF document text
    • http://files.wilmingtonprintandmail.com/uploads/1/3/1/6/131637057/cd8bc305482.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/topel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9150/9919/files/renaissance_periodization_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/conversation_log.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/the_red_pony_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/nexukumegujizogidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/zisofibis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/extraccion_de_aceite_por_arrastre_de_vapor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8310/8253/files/memewunobawofataxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8770/files/wejit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/xenevuvevako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/85395936730.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6029 5020 bytes
SHA-256: 69ed3f4b4da1090f7495cb1f254f71091b0e2770bc9d3d24437e9f79b29be654
font_01_sfnt_off00007166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7166 13856 bytes
SHA-256: 72ed14311905719257c138496e1005a30fc40d1d5dc3fe6270ab78c12d459546
font_02_sfnt_off00009d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D91 3688 bytes
SHA-256: c248e4ae7c2a48b3dce05e09b5b8917e7d08bd0f265790e6a9ada84992e00781