Malicious PDF — malware analysis report

Static analysis result for SHA-256 9800dc6c1f788bc2…

MALICIOUS

PDF

53.5 KB Created: 2020-08-07 20:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ae6058b08543b938ed248dca1d48ed SHA-1: ae814998b7b6fd63fe241696f269ec255a0ffd08 SHA-256: 9800dc6c1f788bc2fc9e8516f568effa65a2c5a9f1d3d50fb0312cfd0451a6e9
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link `https://ttraff.ru/pify?keyword=botany+notes+for+bsc+2nd+year+pdf` points to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests that the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. 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.ru/pify?keyword=botany+notes+for+bsc+2nd+year+pdf
    • http://files.mrbeansadventures.com/uploads/1/3/1/4/131454345/javatojenadejuf.pdf
    • http://files.writethegoodfuture.org/uploads/1/3/1/3/131379792/fonudix.pdf
    • http://files.rcampbellconstructionllc.com/uploads/1/3/0/7/130775402/5123977.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/43614881597.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/57836430562.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/midojak.pdf
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/zapovasanununofol.pdf
    • https://cdn.shopify.com/s/files/1/0432/7299/4971/files/goxoxamak.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/20838795234.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/free_editor_android.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/65438086409.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/wabagijeguzevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/lizafen.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/bulozigigazipekulaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0568/1557/files/kupugixejuxadusixeselepof.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/retoxadovepamuwefiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/6605/5063/files/64591407608.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007312.bin
3095f022e930fce94f7522d7f7f155e9a2f7e9d4a08be31c98483e20eca0c983		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7312 5540 bytes
font_01_sfnt_off000085fd.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85FD 1800 bytes
font_02_sfnt_off00008e8a.bin
6dbd7844d83225525d1c3822e4d73826ab1d0fb22ee2b553f118ef279b13b1d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8A 10748 bytes
font_03_sfnt_off0000b333.bin
9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB333 16068 bytes

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