Malicious PDF — malware analysis report

Static analysis result for SHA-256 23262a6c80d009b7…

MALICIOUS

PDF

45.6 KB Created: 2020-08-19 09:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa749a04efaf93faadba0540c0c746d1 SHA-1: 16158ea41e8ab1cd077346af93ec1903e467182a SHA-256: 23262a6c80d009b78176a3edc8fa29aee64c458ea21ab9602fdafb9e684b00e7
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector (ttraff.com). The document body also contains text that appears to be a lure for downloading software, combined with a heuristic firing for a malicious redirector link. This suggests the document's primary purpose is to trick the user into visiting a malicious site.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=endnote+desktop+free
    • http://files.waste--less.com/uploads/1/3/1/3/131398109/zubatitapejag-ligaxiwowojog-nenefuwobulezix.pdf
    • http://files.ceciliabramhallart.com/uploads/1/3/2/7/132740307/5016559.pdf
    • http://dudavup.britishnatureguide.com/uploads/1/3/0/7/130739693/5da4eed6464526.pdf
    • http://files.youcanchangeeducation.org/uploads/1/3/1/3/131379262/9525871.pdf
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/frame_rate_processing.pdf
    • https://cdn.shopify.com/s/files/1/0434/8700/2790/files/bixawisefidofigeramekek.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/bike_parts_name_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/shortcut_to_close_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1248/files/water_brushes_for_photoshop_cs6.pdf
    • https://cdn.shopify.com/s/files/1/0440/3000/1302/files/36336550680.pdf
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/xejakasebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8062/files/linedekatago.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/58349359948.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/46642490236.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_off00006d31.bin
67cff0abff74bfbc5db055571173c7fb04dbf1a8e1dbaa2b30a87558d8d443b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D31 4816 bytes
font_01_sfnt_off00007daa.bin
3ca07e5c0fb12a0dee36d33cc7e4abf45e3094dbbe8ec7271e09b4fb2369576c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAA 13868 bytes

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