Malicious PDF — malware analysis report

Static analysis result for SHA-256 defa502f281bcae9…

MALICIOUS

PDF

35.5 KB Created: 2020-08-01 07:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53b518754a0ec0e2fe71057a8faefa0b SHA-1: cf101684b0e76b217bb71d16e7801f8c57e65db4 SHA-256: defa502f281bcae93ce495f587584f69b63f82d6ff1bef7ff3869db9a9885db3
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 common tactic for SEO poisoning or phishing campaigns. One of the primary links, 'https://ttraff.ru/pify?keyword=xcom+2+co+op+mod', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a coordinated effort to distribute malicious content. The presence of a malicious redirector indicates an attempt to lead the user to a harmful 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=xcom+2+co+op+mod
    • http://files.businessrescuene.com/uploads/1/3/1/6/131606257/0ab23f66f0e0.pdf
    • http://files.porthcawlandthegreatwar.com/uploads/1/3/2/7/132710717/nunoludikidup-tigonipini-goxodovok.pdf
    • http://files.ethelbustamante.net/uploads/1/3/1/4/131406356/7012749.pdf
    • http://files.citysquarebarbershop.com/uploads/1/3/0/7/130739174/f78edac53930.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/nozowumegur.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/wifaxivuxanitamenupevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/18799477750.pdf
    • https://cdn.shopify.com/s/files/1/0438/3073/9106/files/nilozikukolelutetaliwuwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/fapitazugebivima.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/32024557312.pdf
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/41550872346.pdf
    • https://cdn.shopify.com/s/files/1/0440/7279/6310/files/23132704883.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/wimusubopigesomur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdf
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/buvixijexibajepunitojaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/wepezisukimolenotoxa.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_off00004f5f.bin
3a11c3d3cbd826ca36a3393217c17350b0429b7debf2f080f9ab639cd70490c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F5F 4812 bytes
font_01_sfnt_off00005fb3.bin
e120696f3ed99a7aba50d6ecc9824829fbb3585a20acf45cb5bf5e4372613a29
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB3 9880 bytes