Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e953aa85e39a525…

MALICIOUS

PDF

34.6 KB Created: 2020-08-01 17:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5db398a948da5372404e976b243ddabc SHA-1: 51359602bc2b402b4f7cd09add794da0147e0445 SHA-256: 8e953aa85e39a525feb4aef282f485f5b31a6cc04bebad0ad37da8e9d8a02a02
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as the initial point of compromise. The document body contains garbled text but includes the redirector URL and several shopify.com URLs, suggesting a lure to external content. No scripts were extracted, and the primary malicious activity appears to be the redirection to malicious infrastructure.

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.cc/pify?keyword=theme+hotel+hooda+math
    • http://files.islandgemcreations.com/uploads/1/3/2/6/132681658/3726289.pdf
    • http://files.erniefelice.com/uploads/1/3/1/6/131637218/c5cabe9e707fa5.pdf
    • http://files.firsttakeagency.com/uploads/1/3/2/6/132681033/ramokonosakel.pdf
    • http://files.livingwhole.net/uploads/1/3/0/8/130814121/8af1c2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10588857949.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/vexefinuvupuwili.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/webodir.pdf
    • https://cdn.shopify.com/s/files/1/0437/1555/9573/files/at_t_router_settings.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/introduction_to_management_science_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/25993309353.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/30325961039.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/xorebijezabe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/malemimukozib.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/69711868623.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/rokoxetebojipibab.pdf
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/witcher_3_mods._settings.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_off00004b48.bin
b5740d0d36d27646f2b095b07a24ede37198a9372857c48472b742177c68a956		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B48 4740 bytes
font_01_sfnt_off00005b39.bin
17d670cc31a1b9714ec914b6418132e9e716779cc93b3aecb8f0333b76df0804		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B39 10044 bytes

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