Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee99bfee4c980270…

MALICIOUS

PDF

39.1 KB Created: 2020-08-25 01:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ca1c86f5bd15fafb62d7dfe7fca23ab SHA-1: c6f211e42160e3baf925981a7e9f14b83d02a649 SHA-256: ee99bfee4c98027070388135a681951a5a2d423f1260de6ba2db712388201710
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, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains URLs that are likely part of this link farm strategy. The primary malicious URL identified is ttraff.ru, which is used to redirect users to other potentially harmful sites.

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=answers+in+genesis+bible+curriculum+homeschool
    • http://files.quirkydesserts.com/uploads/1/3/1/0/131070674/nelekuxud_serexur_bejuxatewejoba_xuzirafabuxakeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/spss_amos_free_trial.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/80334760252.pdf
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/29079445176.pdf
    • https://cdn.shopify.com/s/files/1/0431/6758/0322/files/color_text_generator.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/convert_file_to_amazon_kindle_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/aramaic_bible_in_plain_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/45109780784.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/83010700987.pdf
    • https://cdn.shopify.com/s/files/1/0438/8362/6651/files/wovutabojowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/79203978366.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_off00005acc.bin
d57aa3008c65a01baea38682f5c419c56afdef621fc1079af3908236e0695486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACC 5224 bytes
font_01_sfnt_off00006c6f.bin
1f8b5ab9674e805d98fc0bcb07886179d2ab4392c1980899d21308c373ecdcae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6F 10288 bytes

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