Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4a8b1884d6c3d80…

MALICIOUS

PDF

65.0 KB Created: 2020-08-15 04:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb9d3c3b1e74b42bef27b7fa2716f9f2 SHA-1: 01152dc750c22638ab538caf5161022c1cffdd3e SHA-256: c4a8b1884d6c3d80d77d5698c561a2b471dacace17181e4409d27cd199073bab
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. Another heuristic flags a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=ascii+ki+full+form+batao', which is also flagged as malicious. These indicators suggest the primary purpose is to lure users to potentially harmful content or to manipulate search engine rankings.

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=ascii+ki+full+form+batao In PDF document text
    • http://files.missgreenbayarea.com/uploads/1/3/2/6/132682723/satorigebok-kumotugujokexi-zakitigaginopux.pdfIn PDF document text
    • http://files.pleasantviewbc.net/uploads/1/3/1/4/131482975/tesorakizaruwowo.pdfIn PDF document text
    • http://zajoxu.bornleaderconsulting.com/uploads/1/3/2/6/132680869/bobosujewijovak.pdfIn PDF document text
    • http://files.garryoak.info/uploads/1/3/1/4/131409090/b40621ec.pdfIn PDF document text
    • http://latufa.hacd.org/uploads/1/3/1/4/131453247/gofap_zekedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/subiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/duvelofomufanibozifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/bon_voyage_french_2_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9696/5269/files/mirewejajovonek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/99934244720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/89029114676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8339/7275/files/41636267069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1824/files/79288618312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/rugadujuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0515/5240/files/diluzuwov.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075d7.bin
bf8dad118a68546f3e3dba61a14fc4677061718d940c00ea1904cf7af8cb5300		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D7 5220 bytes
font_01_sfnt_off0000877b.bin
fecd9f0b30dbb3b4c81720a6300768d8311a22028e605e9d5d9e2dfd5510fec9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x877B 17812 bytes
font_02_sfnt_off0000bebc.bin
f6a571093e3b8be9ac39df251bca6b0588223708341226e741156dc1536cd77a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBC 7196 bytes
font_03_sfnt_off0000d756.bin
292d3a0cebaa562fb39d001fc2e005b8810949abae42f64d18403e87df882c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD756 13784 bytes

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