Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecba0d3dd411cf79…

MALICIOUS

PDF

49.2 KB Created: 2020-07-30 19:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6299f25ab4a0ede4c43a61c6d64f55dc SHA-1: 97736ee947ef89c46923cd5367f46fcfecddf1c4 SHA-256: ecba0d3dd411cf797df754fe3c16b7ca49a3b12a8292c2c97364cabd44424b30
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=ahmednagar+district+map+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be generated content related to PDF creation, further supporting the attack pattern.

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=ahmednagar+district+map+pdf
    • http://files.cognitivecaptial.org/uploads/1/3/0/7/130739399/togumunef-vodibokexabev-varuwawowijasu.pdf
    • http://files.justawesomesauce.ca/uploads/1/3/0/7/130775371/fogizapubo.pdf
    • http://files.knightsmun.com/uploads/1/3/0/7/130776054/wuxaridova_wivepefidosogod.pdf
    • http://files.sfagrammar.sanctafamilia.org/uploads/1/3/1/3/131379899/7020446.pdf
    • http://files.sebastian.boundlessgym.com/uploads/1/3/1/3/131384636/xokawizuge_fojodimefe_pimudaporipus_vuvagidupobi.pdf
    • http://files.sfagrammar.sanctafamilia.o
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/92330247320.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7504/files/72710790572.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/nuwomidopigux.pdf
    • https://cdn.shopify.com/s/files/1/0439/2130/9851/files/puwarejitumarotudaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/pekusifitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/64588466410.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3568/files/wijubufebifagetog.pdf
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/84312867058.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/vatiwazegutizapop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7815/files/6960781516.pdf
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/wavivufanilejexutowusif.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_off000081eb.bin
9ae0f5b43c27b2ada46d2227eb5c8c5e79bbb5c2ebd74ff65f43e0ca518cf7d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81EB 5204 bytes
font_01_sfnt_off00009371.bin
2a61bb14b02f992bb7458763c780c282b56feba2a21a9d69fac043665347e066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9371 10724 bytes

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