Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e6028fb28b0630…

MALICIOUS

PDF

52.0 KB Created: 2020-08-13 03:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a01ef7d7af5d54284060bebc39346fe SHA-1: 7166c3bc8f4ff42e362b1c59fff9869039d75f7b SHA-256: e1e6028fb28b063039b001250c2dbd625f283d7ceecfe3f98fd212f4423f4306
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 external resources. One critical heuristic firing indicates a malicious redirector link, and another identifies a PDF link farm. The document body, though heavily obfuscated, contains a URL that appears to be part of a SEO spam campaign, likely intended to drive traffic to malicious sites.

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.com/wb?keyword=natural%20and%20flat%20top%20sampling%20pdf
    • http://tuguregad.updateshappen.com/uploads/1/3/2/7/132740892/12e01d7.pdf
    • http://files.premiumlimousines.ch/uploads/1/3/1/8/131855992/gexuf_ximotikezig_zuxegevepumos_basipa.pdf
    • http://files.littlesparrowstudio.com/uploads/1/3/0/7/130740123/5677966.pdf
    • http://files.anndesignstudio.com/uploads/1/3/1/0/131070051/duzesadibekadiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/luzidit.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/88724856750.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/movikulewerudazuxedo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/bikiponunojilojevesod.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/8135226088.pdf
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/api_527_standard.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/reduced_adjective_clause_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0438/2661/0333/files/62223412981.pdf
    • https://cdn.shopify.com/s/files/1/0435/6256/5781/files/jujagogurotafek.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/petaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/ikea_catalogue_uk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006766.bin
75cf8c9a1382a9166febb240fde99487a7cfab2b9e0079bae5b8ca47da5796f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6766 11048 bytes
font_01_sfnt_off00008a75.bin
d70eb2e6000afb2612eddb3a0f87bed38cc994b90a7ce33f8ae2c61406549f8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A75 5328 bytes
font_02_sfnt_off00009c82.bin
4555490dcd37b0d7bb6ec12ba55dc1fa0645efa448bb5f1403f4d63fd6aba07d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C82 10512 bytes

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