Malicious PDF — malware analysis report

Static analysis result for SHA-256 a612d082c8a8813c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 01:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91bcfb5b471730a9731be20a842af121 SHA-1: c862245bef73663ffd2763939db6421306417965 SHA-256: a612d082c8a8813ccf32ba4a3584c09b671597c24438096b66de6e63e75d0c44
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, many of which point to SEO-optimized PDF documents hosted on Shopify. One of these links, specifically the one associated with the text 'Architects in delhi ncr pdf', redirects to a malicious domain (ttraff.ru). This indicates a likely attempt to drive traffic to malicious infrastructure through a link farm, potentially for phishing or malware distribution.

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=architects+in+delhi+ncr+pdf
    • http://files.rethinkstigma.org/uploads/1/3/1/6/131637362/0567bbabb.pdf
    • http://files.daniellamoffsonfoundation.com/uploads/1/3/0/7/130738603/a9c138fe.pdf
    • http://files.picassofaceandbodypainter.com/uploads/1/3/1/4/131453151/4904285.pdf
    • http://files.fromagarden.com/uploads/1/3/2/3/132302733/xuvowoziredox.pdf
    • http://tonapapu.threeaineconsultancy.com/uploads/1/3/1/4/131406950/2703618.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/zusipuxes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/pumijowazoxop.pdf
    • https://cdn.shopify.com/s/files/1/0432/2413/7890/files/18600205659.pdf
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/wifomesejela.pdf
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/88904020448.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/brother_mfc_l2700dw_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5687/4151/files/35736643118.pdf
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/733436072.pdf
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/81633630816.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6914/files/xipuka.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_off000064c9.bin
2c9258ff4865af8d403aa387f7f7bcdec912aff83085e9710751df687f839e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 5024 bytes
font_01_sfnt_off000075d2.bin
7e0b27a576cac374f7ed3b11196f70d6d2ef9a408a16ef00df989a64520894a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D2 10080 bytes

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