Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e1627ec710830b…

MALICIOUS

PDF

43.0 KB Created: 2020-04-30 15:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7972cb1ef34c7c3107cc3c74a30cadb0 SHA-1: 892e588aac389423496111dc6acab1903a383caf SHA-256: b6e1627ec710830b6cdee42ef555c956609fbea842f882fece1ed77529e61d3c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a significant number of external links, identified as a link farm, pointing to various PDF files hosted on different domains. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates the presence of instructions for executing Windows scripting tools, suggesting a potential for further malicious activity beyond just link redirection. The primary intent appears to be directing users to a network of sites, likely for SEO manipulation or to serve as a distribution point for other malware.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://attributioninsightengine.com/uploads/1/3/0/5/130550824/130550824.html#golden+wind+op+piano+sheet
    • http://speakingevolution.org/uploads/1/3/1/4/131437649/6523009.pdf
    • http://barenaturalsoaps.com/uploads/1/3/0/5/130551718/nofutaje-negagatepusa.pdf
    • http://willowlaneprints.com/uploads/1/3/0/6/130620858/dibafosefinilaz_jitojewi_vopalaw.pdf
    • http://ninadreyerlcsw.com/uploads/1/3/0/5/130589100/8197996.pdf
    • http://kevinsplumbingandwaterheaterbusiness.com/uploads/1/3/0/3/130323181/d0683332.pdf
    • http://gowthamportfolio.net/uploads/1/3/1/1/131164210/jegolaketidoba.pdf
    • http://theec.org/uploads/1/3/0/8/130874164/gebebuxoram.pdf
    • http://plsdecorators.com/uploads/1/3/0/4/130476277/8286634.pdf
    • http://curacionatural.com/uploads/1/3/0/5/130538840/pexidiferebulek.pdf
    • http://chanisesboutique.com/uploads/1/3/0/5/130589312/8281490.pdf
    • http://sacfskitchener.com/uploads/1/3/0/6/130640029/136696064.pdf
    • http://drlisamurphy.com/uploads/1/3/0/3/130313091/eb980963.pdf
    • http://theapplemechanic.com/uploads/1/3/0/7/130775192/vizenujetabakex-wafejomi-dipawobikerufel.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007db9.bin
4c9a740fd26821fefb3ba3b24739ac7e9ee3a07df7e21fe066933d5796e0451f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB9 9356 bytes

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