Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c89f2c5215963b9…

MALICIOUS

PDF

40.1 KB Created: 2020-08-01 23:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58f1b170a62d48548cf0cab240b4018e SHA-1: e7d82ddf4765e77d5ff320827ea1c0d68b0c971d SHA-256: 2c89f2c5215963b91ae63d9bd4989cab42aee98843ec8a18e06704e9124f554a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating that it links to known malicious infrastructure. The document body text and embedded URLs suggest a lure to download content, specifically mentioning 'adele 25 album'. The primary malicious URL is https://ttraff.ru/pify?keyword=download+adele+25+album, which is likely used to redirect the user to a malicious payload. The PDF_SEO_LINK_FARM heuristic also indicates a large number of outbound links, many hosted on cdn.shopify.com, suggesting a link farm used for SEO poisoning or to obscure the final malicious destination.

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=download+adele+25+album
    • http://files.tributegiftsgp.com/uploads/1/3/1/0/131071063/1060799.pdf
    • http://files.mindbusterstrivia.com/uploads/1/3/1/8/131857920/7697937.pdf
    • http://files.barriointellect.com/uploads/1/3/2/7/132740321/104c7d.pdf
    • http://files.ivazullo.com/uploads/1/3/2/6/132682076/jelepimijinuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7126/files/kixugoroboretimisetex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6260/files/pidezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/61959603219.pdf
    • https://cdn.shopify.com/s/files/1/0435/6967/6451/files/92125874917.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/kidinaresafabenofefevisuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3188/8035/files/64236844107.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/zezurodikabukitenap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0441/1126/5944/files/65352167712.pdf
    • https://cdn.shopify.com/s/files/1/0428/8846/2495/files/28491232737.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/36122193245.pdf
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/kufapuseb.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/61674730077.pdf
    • https://cdn.shopify.com/s/files/1/0432/5205/6227/files/komawodivavo.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_off00005ec8.bin
f1c375c983927b6acc0d4c887a2f68823169bd07eecd7887fb90c97270e42768
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC8 5184 bytes
font_01_sfnt_off0000707a.bin
cb8ea9ba52b2cf89f1dbe69e15c109a3a67314089a8a0d142a8c05285344dfb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x707A 10140 bytes